childOf: function(element, ancestor) {    element = $(element), ancestor = $(ancestor);    while (element = element.parentNode)      if (element == ancestor) return true;    return false;  },  scrollTo: function(element) {    element = $(element);    var x = element.x ? element.x : element.offsetLeft,        y = element.y ? element.y : element.offsetTop;    window.scrollTo(x, y);  },  getStyle: function(element, style) {    element = $(element);    var value = element.style[style.camelize()];    if (!value) {      if (document.defaultView && document.defaultView.getComputedStyle) {        var css = document.defaultView.getComputedStyle(element, null);        value = css ? css.getPropertyValue(style) : null;      } else if (element.currentStyle) {        value = element.currentStyle[style.camelize()];      }    }    if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))      if (Element.getStyle(element, 'position') == 'static') value = 'auto';    return value == 'auto' ? null : value;  },  setStyle: function(element, style) {    element = $(element);    for (var name in style)      element.style[name.camelize()] = style[name];  },  getDimensions: function(element) {    element = $(element);    if (Element.getStyle(element, 'display') != 'none')      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;    els.visibility = 'hidden';    els.position = 'absolute';    els.display = '';    var originalWidth = element.clientWidth;    var originalHeight = element.clientHeight;    els.display = 'none';    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;      }    }  },  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 = '';    }  },  makeClipping: function(element) {    element = $(element);    if (element._overflow) return;    element._overflow = element.style.overflow;    if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')      element.style.overflow = 'hidden';  },  undoClipping: function(element) {    element = $(element);    if (element._overflow) return;    element.style.overflow = element._overflow;    element._overflow = undefined;  }}Object.extend(Element, Element.Methods);var _nativeExtensions = false;if(!HTMLElement && /Konqueror|Safari|KHTML/.test(navigator.userAgent)) {  var HTMLElement = {}  HTMLElement.prototype = document.createElement('div').__proto__;}Element.addMethods = function(methods) {  Object.extend(Element.Methods, methods || {});  if(typeof HTMLElement != 'undefined') {    var methods = Element.Methods, cache = Element.extend.cache;    for (property in methods) {      var value = methods[property];      if (typeof value == 'function')        HTMLElement.prototype[property] = cache.findOrStore(value);    }    _nativeExtensions = true;  }}Element.addMethods();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.toLowerCase();        if (tagName == 'tbody' || tagName == 'tr') {          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(this.toArray().concat(classNameToAdd).join(' '));  },  remove: function(classNameToRemove) {    if (!this.include(classNameToRemove)) return;    this.set(this.select(function(className) {      return className != classNameToRemove;    }).join(' '));  },  toString: function() {    return this.toArray().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.id == ' + clause.inspect());    if (clause = params.tagName)      conditions.push('element.tagName.toUpperCase() == ' + clause.inspect());    if ((clause = params.classNames).length > 0)      for (var i = 0; i < clause.length; i++)        conditions.push('Element.hasClassName(element, ' + clause[i].inspect() + ')');    if (clause = params.attributes) {      clause.each(function(attribute) {        var value = 'element.getAttribute(' + 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(value + ' != null'); break;          default:        throw 'Unknown operator ' + attribute.operator + ' in selector';        }      });    }    return conditions.join(' && ');  },  compileMatcher: function() {    this.match = new Function('element', 'if (!element.tagName) return false; \      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; i < scope.length; i++)      if (this.match(element = scope[i]))        results.push(Element.extend(element));    return results;  },  toString: function() {    return this.expression;  }}function $$() {  return $A(arguments).map(function(expression) {    return expression.strip().split(/\s+/).inject([null], function(results, expr) {      var selector = new Selector(expr);      return results.map(selector.findElements.bind(selector)).flatten();    });  }).flatten();}var Field = {  clear: function() {    for (var i = 0; i < arguments.length; i++)      $(arguments[i]).value = '';  },  focus: function(element) {    $(element).focus();  },  present: function() {    for (var i = 0; i < arguments.length; i++)      if ($(arguments[i]).value == '') return false;    return true;  },  select: function(element) {    $(element).select();  },  activate: function(element) {    element = $(element);    element.focus();    if (element.select)      element.select();  }}/*--------------------------------------------------------------------------*/var Form = {  serialize: function(form) {    var elements = Form.getElements($(form));    var queryComponents = new Array();    for (var i = 0; i < elements.length; i++) {      var queryComponent = Form.Element.serialize(elements[i]);      if (queryComponent)        queryComponents.push(queryComponent);    }    return queryComponents.join('&');  },  getElements: function(form) {    form = $(form);    var elements = new Array();    for (var tagName in Form.Element.Serializers) {      var tagElements = form.getElementsByTagName(tagName);      for (var j = 0; j < tagElements.length; j++)        elements.push(tagElements[j]);    }    return elements;  },  getInputs: function(form, typeName, name) {    form = $(form);    var inputs = form.getElementsByTagName('input');    if (!typeName && !name)      return inputs;    var matchingInputs = new Array();    for (var i = 0; i < inputs.length; i++) {      var input = inputs[i];      if ((typeName && input.type != typeName) ||          (name && input.name != name))        continue;      matchingInputs.push(input);    }    return matchingInputs;  },  disable: function(form) {    var elements = Form.getElements(form);    for (var i = 0; i < elements.length; i++) {      var element = elements[i];      element.blur();      element.disabled = 'true';    }  },  enable: function(form) {    var elements = Form.getElements(form);    for (var i = 0; i < elements.length; i++) {      var element = elements[i];      element.disabled = '';    }  },  findFirstElement: function(form) {    return Form.getElements(form).find(function(element) {      return element.type != 'hidden' && !element.disabled &&        ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());    });  },  focusFirstElement: function(form) {    Field.activate(Form.findFirstElement(form));  },  reset: function(form) {    $(form).reset();  }}Form.Element = {  serialize: function(element) {    element = $(element);    var method = element.tagName.toLowerCase();    var parameter = Form.Element.Serializers[method](element);    if (parameter) {      var key = encodeURIComponent(parameter[0]);      if (key.length == 0) return;      if (parameter[1].constructor != Array)        parameter[1] = [parameter[1]];      return parameter[1].map(function(value) {        return key + '=' + encodeURIComponent(value);      }).join('&');    }  },  getValue: function(element) {    element = $(element);    var method = element.tagName.toLowerCase();