element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');        } else if(value === '') {          if(/MSIE/.test(navigator.userAgent) && !window.opera)            element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'');        } else {          if(value < 0.00001) value = 0;          if(/MSIE/.test(navigator.userAgent) && !window.opera)            element.style.filter = element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'') +              'alpha(opacity='+value*100+')';        }      } else if(['float','cssFloat'].include(name)) name = (typeof element.style.styleFloat != 'undefined') ? 'styleFloat' : 'cssFloat';      element.style[name.camelize()] = 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.style.overflow || 'auto';    if ((Element.getStyle(element, 'overflow') || 'visible') != '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;  }};Object.extend(Element.Methods, {childOf: Element.Methods.descendantOf});Element._attributeTranslations = {};Element._attributeTranslations.names = {  colspan:   "colSpan",  rowspan:   "rowSpan",  valign:    "vAlign",  datetime:  "dateTime",  accesskey: "accessKey",  tabindex:  "tabIndex",  enctype:   "encType",  maxlength: "maxLength",  readonly:  "readOnly",  longdesc:  "longDesc"};Element._attributeTranslations.values = {  _getAttr: function(element, attribute) {    return element.getAttribute(attribute, 2);  },  _flag: function(element, attribute) {    return $(element).hasAttribute(attribute) ? attribute : null;  },  style: function(element) {    return element.style.cssText.toLowerCase();  },  title: function(element) {    var node = element.getAttributeNode('title');    return node.specified ? node.nodeValue : null;  }};Object.extend(Element._attributeTranslations.values, {  href: Element._attributeTranslations.values._getAttr,  src:  Element._attributeTranslations.values._getAttr,  disabled: Element._attributeTranslations.values._flag,  checked:  Element._attributeTranslations.values._flag,  readonly: Element._attributeTranslations.values._flag,  multiple: Element._attributeTranslations.values._flag});Element.Methods.Simulated = {  hasAttribute: function(element, attribute) {    var t = Element._attributeTranslations;    attribute = t.names[attribute] || attribute;    return $(element).getAttributeNode(attribute).specified;  }};// IE is missing .innerHTML support for TABLE-related elementsif (document.all && !window.opera){  Element.Methods.update = function(element, html) {    element = $(element);    html = typeof html == 'undefined' ? '' : html.toString();    var tagName = element.tagName.toUpperCase();    if (['THEAD','TBODY','TR','TD'].include(tagName)) {      var div = document.createElement('div');      switch (tagName) {        case 'THEAD':        case 'TBODY':          div.innerHTML = '<table><tbody>' +  html.stripScripts() + '</tbody></table>';          depth = 2;          break;        case 'TR':          div.innerHTML = '<table><tbody><tr>' +  html.stripScripts() + '</tr></tbody></table>';          depth = 3;          break;        case 'TD':          div.innerHTML = '<table><tbody><tr><td>' +  html.stripScripts() + '</td></tr></tbody></table>';          depth = 4;      }      $A(element.childNodes).each(function(node){        element.removeChild(node)      });      depth.times(function(){ div = div.firstChild });      $A(div.childNodes).each(        function(node){ element.appendChild(node) });    } else {      element.innerHTML = html.stripScripts();    }    setTimeout(function() {html.evalScripts()}, 10);    return element;  }};Object.extend(Element, Element.Methods);var _nativeExtensions = false;if(/Konqueror|Safari|KHTML/.test(navigator.userAgent))  ['', 'Form', 'Input', 'TextArea', 'Select'].each(function(tag) {    var className = 'HTML' + tag + 'Element';    if(window[className]) return;    var klass = window[className] = {};    klass.prototype = document.createElement(tag ? tag.toLowerCase() : 'div').__proto__;  });Element.addMethods = function(methods) {  Object.extend(Element.Methods, methods || {});  function copy(methods, destination, onlyIfAbsent) {    onlyIfAbsent = onlyIfAbsent || false;    var cache = Element.extend.cache;    for (var property in methods) {      var value = methods[property];      if (!onlyIfAbsent || !(property in destination))        destination[property] = cache.findOrStore(value);    }  }  if (typeof HTMLElement != 'undefined') {    copy(Element.Methods, HTMLElement.prototype);    copy(Element.Methods.Simulated, HTMLElement.prototype, true);    copy(Form.Methods, HTMLFormElement.prototype);    [HTMLInputElement, HTMLTextAreaElement, HTMLSelectElement].each(function(klass) {      copy(Form.Element.Methods, klass.prototype);    });    _nativeExtensions = true;  }}var Toggle = new Object();Toggle.display = Element.toggle;/*--------------------------------------------------------------------------*/Abstract.Insertion = function(adjacency) {  this.adjacency = adjacency;}Abstract.Insertion.prototype = {  initialize: function(element, content) {    this.element = $(element);    this.content = content.stripScripts();    if (this.adjacency && this.element.insertAdjacentHTML) {      try {        this.element.insertAdjacentHTML(this.adjacency, this.content);      } catch (e) {        var tagName = this.element.tagName.toUpperCase();        if (['TBODY', 'TR'].include(tagName)) {          this.insertContent(this.contentFromAnonymousTable());        } else {          throw e;        }      }    } else {      this.range = this.element.ownerDocument.createRange();      if (this.initializeRange) this.initializeRange();      this.insertContent([this.range.createContextualFragment(this.content)]);    }    setTimeout(function() {content.evalScripts()}, 10);  },  contentFromAnonymousTable: function() {    var div = document.createElement('div');    div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';    return $A(div.childNodes[0].childNodes[0].childNodes);  }}var Insertion = new Object();Insertion.Before = Class.create();Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {  initializeRange: function() {    this.range.setStartBefore(this.element);  },  insertContent: function(fragments) {    fragments.each((function(fragment) {      this.element.parentNode.insertBefore(fragment, this.element);    }).bind(this));  }});Insertion.Top = Class.create();Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {  initializeRange: function() {    this.range.selectNodeContents(this.element);    this.range.collapse(true);  },  insertContent: function(fragments) {    fragments.reverse(false).each((function(fragment) {      this.element.insertBefore(fragment, this.element.firstChild);    }).bind(this));  }});Insertion.Bottom = Class.create();Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {  initializeRange: function() {    this.range.selectNodeContents(this.element);    this.range.collapse(this.element);  },  insertContent: function(fragments) {    fragments.each((function(fragment) {      this.element.appendChild(fragment);    }).bind(this));  }});Insertion.After = Class.create();Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {  initializeRange: function() {    this.range.setStartAfter(this.element);  },  insertContent: function(fragments) {    fragments.each((function(fragment) {      this.element.parentNode.insertBefore(fragment,        this.element.nextSibling);    }).bind(this));  }});/*--------------------------------------------------------------------------*/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);var Selector = Class.create();Selector.prototype = {  initialize: function(expression) {    this.params = {classNames: []};    this.expression = expression.toString().strip();    this.parseExpression();    this.compileMatcher();  },  parseExpression: function() {    function abort(message) { throw 'Parse error in selector: ' + message; }    if (this.expression == '')  abort('empty expression');    var params = this.params, expr = this.expression, match, modifier, clause, rest;    while (match = expr.match(/^(.*)\[([a-z0-9_:-]+?)(?:([~\|!]?=)(?:"([^"]*)"|([^\]\s]*)))?\]$/i)) {      params.attributes = params.attributes || [];      params.attributes.push({name: match[2], operator: match[3], value: match[4] || match[5] || ''});      expr = match[1];    }    if (expr == '*') return this.params.wildcard = true;    while (match = expr.match(/^([^a-z0-9_-])?([a-z0-9_-]+)(.*)/i)) {      modifier = match[1], clause = match[2], rest = match[3];      switch (modifier) {        case '#':       params.id = clause; break;        case '.':       params.classNames.push(clause); break;        case '':        case undefined: params.tagName = clause.toUpperCase(); break;        default:        abort(expr.inspect());      }      expr = rest;    }    if (expr.length > 0) abort(expr.inspect());  },  buildMatchExpression: function() {    var params = this.params, conditions = [], clause;    if (params.wildcard)      conditions.push('true');    if (clause = params.id)      conditions.push('element.readAttribute("id") == ' + clause.inspect());    if (clause = params.tagName)      conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());    if ((clause = params.classNames).length > 0)      for (var i = 0, length = clause.length; i < length; i++)        conditions.push('element.hasClassName(' + clause[i].inspect() + ')');    if (clause = params.attributes) {      clause.each(function(attribute) {        var value = 'element.readAttribute(' + attribute.name.inspect() + ')';        var splitValueBy = function(delimiter) {          return value + ' && ' + value + '.split(' + delimiter.inspect() + ')';        }        switch (attribute.operator) {          case '=':       conditions.push(value + ' == ' + attribute.value.inspect()); break;          case '~=':      conditions.push(splitValueBy(' ') + '.include(' + attribute.value.inspect() + ')'); break;          case '|=':      conditions.push(                            splitValueBy('-') + '.first().toUpperCase() == ' + attribute.value.toUpperCase().inspect()                          ); break;          case '!=':      conditions.push(value + ' != ' + attribute.value.inspect()); break;          case '':          case undefined: conditions.push('element.hasAttribute(' + attribute.name.inspect() + ')'); break;          default:        throw 'Unknown operator ' + attribute.operator + ' in selector';        }      });    }    return conditions.join(' && ');  },  compileMatcher: function() {    this.match = new Function('element', 'if (!element.tagName) return false; \      element = $(element); \      return ' + this.buildMatchExpression());  },  findElements: function(scope) {    var element;    if (element = $(this.params.id))      if (this.match(element))        if (!scope || Element.childOf(element, scope))          return [element];    scope = (scope || document).getElementsByTagName(this.params.tagName || '*');    var results = [];    for (var i = 0, length = scope.length; i < length; i++)      if (this.match(element = scope[i]))        results.push(Element.extend(element));    return results;  },  toString: function() {    return this.expression;  }}Object.extend(Selector, {  matchElements: function(elements, expression) {    var selector = new Selector(expression);    return elements.select(selector.match.bind(selector)).map(Element.extend);  },  findElement: function(elements, expression, index) {    if (typeof expression == 'number') index = expression, expression = false;    return Selector.matchElements(elements, expression || '*')[index || 0];  },  findChildElements: function(element, expressions) {    return expressions.map(function(expression) {      return expression.match(/[^\s"]+(?:"[^"]*"[^\s"]+)*/g).inject([null], function(results, expr) {        var selector = new Selector(expr);        return results.inject([], function(elements, result) {          return elements.concat(selector.findElements(result || element));        });      });    }).flatten();  }});