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Print - Prototype Javascript Library - JavaScriptBank.com

Full version: jsB@nk » Framework » Prototype » Prototype Javascript Library
URL: http://www.javascriptbank.com/prototype-javascript-library.html

Prototype Javascript Library © JavaScriptBank.comPrototype is a JavaScript framework that features a unique, easy-to-use toolkit for class-driven development. The standards-compliant code takes a lot of the burden associated with creating rich, highly interactive Web pages.Documentation can be found at: http://tinyurl.com/c7agc and http://tinyurl.com/buhp2.

Full version: jsB@nk » Framework » Prototype » Prototype Javascript Library
URL: http://www.javascriptbank.com/prototype-javascript-library.html



JavaScript
<script type=text/javascript name="prototype.js.js">/*     This script downloaded from www.JavaScriptBank.com     Come to view and download over 2000+ free javascript at www.JavaScriptBank.com*//*  Prototype JavaScript framework, version 1.4.0 *  (c) 2005 Sam Stephenson <sam@conio.net> * *  Prototype is freely distributable under the terms of an MIT-style license. *  For details, see the Prototype web site: http://prototype.conio.net/ *  Documentation can be found at: *  http://tinyurl.com/c7agc *  http://tinyurl.com/buhp2 */*--------------------------------------------------------------------------*/var Prototype = {  Version: '1.4.0',  ScriptFragment: '(?:<script.*?>)((n|r|.)*?)(?:</script>)',  emptyFunction: function() {},  K: function(x) {return x}}var Class = {  create: function() {    return function() {      this.initialize.apply(this, arguments);    }  }}var Abstract = new Object();Object.extend = function(destination, source) {  for (property in source) {    destination[property] = source[property];  }  return destination;}Object.inspect = function(object) {  try {    if (object == undefined) return 'undefined';    if (object == null) return 'null';    return object.inspect ? object.inspect() : object.toString();  } catch (e) {    if (e instanceof RangeError) return '...';    throw e;  }}Function.prototype.bind = function() {  var __method = this, args = $A(arguments), object = args.shift();  return function() {    return __method.apply(object, args.concat($A(arguments)));  }}Function.prototype.bindAsEventListener = function(object) {  var __method = this;  return function(event) {    return __method.call(object, event || window.event);  }}Object.extend(Number.prototype, {  toColorPart: function() {    var digits = this.toString(16);    if (this < 16) return '0' + digits;    return digits;  },  succ: function() {    return this + 1;  },  times: function(iterator) {    $R(0, this, true).each(iterator);    return this;  }});var Try = {  these: function() {    var returnValue;    for (var i = 0; i < arguments.length; i++) {      var lambda = arguments[i];      try {        returnValue = lambda();        break;      } catch (e) {}    }    return returnValue;  }}/*--------------------------------------------------------------------------*/var PeriodicalExecuter = Class.create();PeriodicalExecuter.prototype = {  initialize: function(callback, frequency) {    this.callback = callback;    this.frequency = frequency;    this.currentlyExecuting = false;    this.registerCallback();  },  registerCallback: function() {    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);  },  onTimerEvent: function() {    if (!this.currentlyExecuting) {      try {        this.currentlyExecuting = true;        this.callback();      } finally {        this.currentlyExecuting = false;      }    }  }}/*--------------------------------------------------------------------------*/function $() {  var elements = new Array();  for (var i = 0; i < arguments.length; i++) {    var element = arguments[i];    if (typeof element == 'string')      element = document.getElementById(element);    if (arguments.length == 1)      return element;    elements.push(element);  }  return elements;}Object.extend(String.prototype, {  stripTags: function() {    return this.replace(/</?[^>]+>/gi, '');  },  stripScripts: function() {    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');  },  extractScripts: function() {    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');    return (this.match(matchAll) || []).map(function(scriptTag) {      return (scriptTag.match(matchOne) || ['', ''])[1];    });  },  evalScripts: function() {    return this.extractScripts().map(eval);  },  escapeHTML: function() {    var div = document.createElement('div');    var text = document.createTextNode(this);    div.appendChild(text);    return div.innerHTML;  },  unescapeHTML: function() {    var div = document.createElement('div');    div.innerHTML = this.stripTags();    return div.childNodes[0] ? div.childNodes[0].nodeValue : '';  },  toQueryParams: function() {    var pairs = this.match(/^??(.*)$/)[1].split('&');    return pairs.inject({}, function(params, pairString) {      var pair = pairString.split('=');      params[pair[0]] = pair[1];      return params;    });  },  toArray: function() {    return this.split('');  },  camelize: function() {    var oStringList = this.split('-');    if (oStringList.length == 1) return oStringList[0];    var camelizedString = this.indexOf('-') == 0      ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)      : oStringList[0];    for (var i = 1, len = oStringList.length; i < len; i++) {      var s = oStringList[i];      camelizedString += s.charAt(0).toUpperCase() + s.substring(1);    }    return camelizedString;  },  inspect: function() {    return "'" + this.replace('\', '\\').replace("'", '\'') + "'";  }});String.prototype.parseQuery = String.prototype.toQueryParams;var $break    = new Object();var $continue = new Object();var Enumerable = {  each: function(iterator) {    var index = 0;    try {      this._each(function(value) {        try {          iterator(value, index++);        } catch (e) {          if (e != $continue) throw e;        }      });    } catch (e) {      if (e != $break) throw e;    }  },  all: function(iterator) {    var result = true;    this.each(function(value, index) {      result = result && !!(iterator || Prototype.K)(value, index);      if (!result) throw $break;    });    return result;  },  any: function(iterator) {    var result = true;    this.each(function(value, index) {      if (result = !!(iterator || Prototype.K)(value, index))        throw $break;    });    return result;  },  collect: function(iterator) {    var results = [];    this.each(function(value, index) {      results.push(iterator(value, index));    });    return results;  },  detect: function (iterator) {    var result;    this.each(function(value, index) {      if (iterator(value, index)) {        result = value;        throw $break;      }    });    return result;  },  findAll: function(iterator) {    var results = [];    this.each(function(value, index) {      if (iterator(value, index))        results.push(value);    });    return results;  },  grep: function(pattern, iterator) {    var results = [];    this.each(function(value, index) {      var stringValue = value.toString();      if (stringValue.match(pattern))        results.push((iterator || Prototype.K)(value, index));    })    return results;  },  include: function(object) {    var found = false;    this.each(function(value) {      if (value == object) {        found = true;        throw $break;      }    });    return found;  },  inject: function(memo, iterator) {    this.each(function(value, index) {      memo = iterator(memo, value, index);    });    return memo;  },  invoke: function(method) {    var args = $A(arguments).slice(1);    return this.collect(function(value) {      return value[method].apply(value, args);    });  },  max: function(iterator) {    var result;    this.each(function(value, index) {      value = (iterator || Prototype.K)(value, index);      if (value >= (result || value))        result = value;    });    return result;  },  min: function(iterator) {    var result;    this.each(function(value, index) {      value = (iterator || Prototype.K)(value, index);      if (value <= (result || value))        result = value;    });    return result;  },  partition: function(iterator) {    var trues = [], falses = [];    this.each(function(value, index) {      ((iterator || Prototype.K)(value, index) ?        trues : falses).push(value);    });    return [trues, falses];  },  pluck: function(property) {    var results = [];    this.each(function(value, index) {      results.push(value[property]);    });    return results;  },  reject: function(iterator) {    var results = [];    this.each(function(value, index) {      if (!iterator(value, index))        results.push(value);    });    return results;  },  sortBy: function(iterator) {    return this.collect(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.collect(Prototype.K);  },  zip: function() {    var iterator = Prototype.K, args = $A(arguments);    if (typeof args.last() == 'function')      iterator = args.pop();    var collections = [this].concat(args).map($A);    return this.map(function(value, index) {      iterator(value = collections.pluck(index));      return value;    });  },  inspect: function() {    return '#<Enumerable:' + this.toArray().inspect() + '>';  }}Object.extend(Enumerable, {  map:     Enumerable.collect,  find:    Enumerable.detect,  select:  Enumerable.findAll,  member:  Enumerable.include,  entries: Enumerable.toArray});var $A = Array.from = function(iterable) {  if (!iterable) return [];  if (iterable.toArray) {    return iterable.toArray();  } else {    var results = [];    for (var i = 0; i < iterable.length; i++)      results.push(iterable[i]);    return results;  }}Object.extend(Array.prototype, Enumerable);Array.prototype._reverse = Array.prototype.reverse;Object.extend(Array.prototype, {  _each: function(iterator) {    for (var i = 0; i < this.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 != undefined || value != null;    });  },  flatten: function() {    return this.inject([], function(array, value) {      return array.concat(value.constructor == Array ?        value.flatten() : [value]);    });  },  without: function() {    var values = $A(arguments);    return this.select(function(value) {      return !values.include(value);    });  },  indexOf: function(object) {    for (var i = 0; i < this.length; i++)      if (this[i] == object) return i;    return -1;  },  reverse: function(inline) {    return (inline !== false ? this : this.toArray())._reverse();  },  shift: function() {    var result = this[0];    for (var i = 0; i < this.length - 1; i++)      this[i] = this[i + 1];    this.length--;    return result;  },  inspect: function() {    return '[' + this.map(Object.inspect).join(', ') + ']';  }});var Hash = {  _each: function(iterator) {    for (key in this) {      var value = this[key];      if (typeof value == 'function') continue;      var pair = [key, value];      pair.key = key;      pair.value = value;      iterator(pair);    }  },  keys: function() {    return this.pluck('key');  },  values: function() {    return this.pluck('value');  },  merge: function(hash) {    return $H(hash).inject($H(this), function(mergedHash, pair) {      mergedHash[pair.key] = pair.value;      return mergedHash;    });  },  toQueryString: function() {    return this.map(function(pair) {      return pair.map(encodeURIComponent).join('=');    }).join('&');  },  inspect: function() {    return '#<Hash:{' + this.map(function(pair) {      return pair.map(Object.inspect).join(': ');    }).join(', ') + '}>';  }}function $H(object) {  var hash = Object.extend({}, object || {});  Object.extend(hash, Enumerable);  Object.extend(hash, Hash);  return hash;}ObjectRange = Class.create();Object.extend(ObjectRange.prototype, Enumerable);Object.extend(ObjectRange.prototype, {  initialize: function(start, end, exclusive) {    this.start = start;    this.end = end;    this.exclusive = exclusive;  },  _each: function(iterator) {    var value = this.start;    do {      iterator(value);      value = value.succ();    } while (this.include(value));  },  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 ActiveXObject('Msxml2.XMLHTTP')},      function() {return new ActiveXObject('Microsoft.XMLHTTP')},      function() {return new XMLHttpRequest()}    ) || false;  },  activeRequestCount: 0}Ajax.Responders = {  responders: [],  _each: function(iterator) {    this.responders._each(iterator);  },  register: function(responderToAdd) {    if (!this.include(responderToAdd))      this.responders.push(responderToAdd);  },  unregister: function(responderToRemove) {    this.responders = this.responders.without(responderToRemove);  },  dispatch: function(callback, request, transport, json) {    this.each(function(responder) {      if (responder[callback] && typeof responder[callback] == 'function') {        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 = function() {};Ajax.Base.prototype = {  setOptions: function(options) {    this.options = {      method:       'post',      asynchronous: true,      parameters:   ''    }    Object.extend(this.options, options || {});  },  responseIsSuccess: function() {    return this.transport.status == undefined        || this.transport.status == 0        || (this.transport.status >= 200 && this.transport.status < 300);  },  responseIsFailure: function() {    return !this.responseIsSuccess();  }}Ajax.Request = Class.create();Ajax.Request.Events =  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];Ajax.Request.prototype = Object.extend(new Ajax.Base(), {  initialize: function(url, options) {    this.transport = Ajax.getTransport();    this.setOptions(options);    this.request(url);  },  request: function(url) {    var parameters = this.options.parameters || '';    if (parameters.length > 0) parameters += '&_=';    try {      this.url = url;      if (this.options.method == 'get' && parameters.length > 0)        this.url += (this.url.match(/?/) ? '&' : '?') + parameters;      Ajax.Responders.dispatch('onCreate', this, this.transport);      this.transport.open(this.options.method, this.url,        this.options.asynchronous);      if (this.options.asynchronous) {        this.transport.onreadystatechange = this.onStateChange.bind(this);        setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);      }      this.setRequestHeaders();      var body = this.options.postBody ? this.options.postBody : parameters;      this.transport.send(this.options.method == 'post' ? body : null);    } catch (e) {      this.dispatchException(e);    }  },  setRequestHeaders: function() {    var requestHeaders =      ['X-Requested-With', 'XMLHttpRequest',       'X-Prototype-Version', Prototype.Version];    if (this.options.method == 'post') {      requestHeaders.push('Content-type',        'application/x-www-form-urlencoded');      /* Force "Connection: close" for Mozilla browsers to work around       * a bug where XMLHttpReqeuest sends an incorrect Content-length       * header. See Mozilla Bugzilla #246651.       */      if (this.transport.overrideMimeType)        requestHeaders.push('Connection', 'close');    }    if (this.options.requestHeaders)      requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);    for (var i = 0; i < requestHeaders.length; i += 2)      this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);  },  onStateChange: function() {    var readyState = this.transport.readyState;    if (readyState != 1)      this.respondToReadyState(this.transport.readyState);  },  header: function(name) {    try {      return this.transport.getResponseHeader(name);    } catch (e) {}  },  evalJSON: function() {    try {      return eval(this.header('X-JSON'));    } catch (e) {}  },  evalResponse: function() {    try {      return eval(this.transport.responseText);    } catch (e) {      this.dispatchException(e);    }  },  respondToReadyState: function(readyState) {    var event = Ajax.Request.Events[readyState];    var transport = this.transport, json = this.evalJSON();    if (event == 'Complete') {      try {        (this.options['on' + this.transport.status]         || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]         || Prototype.emptyFunction)(transport, json);      } catch (e) {        this.dispatchException(e);      }      if ((this.header('Content-type') || '').match(/^text/javascript/i))        this.evalResponse();    }    try {      (this.options['on' + event] || Prototype.emptyFunction)(transport, json);      Ajax.Responders.dispatch('on' + event, this, transport, json);    } catch (e) {      this.dispatchException(e);    }    /* Avoid memory leak in MSIE: clean up the oncomplete event handler */    if (event == 'Complete')      this.transport.onreadystatechange = Prototype.emptyFunction;  },  dispatchException: function(exception) {    (this.options.onException || Prototype.emptyFunction)(this, exception);    Ajax.Responders.dispatch('onException', this, exception);  }});Ajax.Updater = Class.create();Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {  initialize: function(container, url, options) {    this.containers = {      success: container.success ? $(container.success) : $(container),      failure: container.failure ? $(container.failure) :        (container.success ? null : $(container))    }    this.transport = Ajax.getTransport();    this.setOptions(options);    var onComplete = this.options.onComplete || Prototype.emptyFunction;    this.options.onComplete = (function(transport, object) {      this.updateContent();      onComplete(transport, object);    }).bind(this);    this.request(url);  },  updateContent: function() {    var receiver = this.responseIsSuccess() ?      this.containers.success : this.containers.failure;    var response = this.transport.responseText;    if (!this.options.evalScripts)      response = response.stripScripts();    if (receiver) {      if (this.options.insertion) {        new this.options.insertion(receiver, response);      } else {        Element.update(receiver, response);      }    }    if (this.responseIsSuccess()) {      if (this.onComplete)        setTimeout(this.onComplete.bind(this), 10);    }  }});Ajax.PeriodicalUpdater = Class.create();Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {  initialize: function(container, url, options) {    this.setOptions(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.onComplete = undefined;    clearTimeout(this.timer);    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);  },  updateComplete: function(request) {    if (this.options.decay) {      this.decay = (request.responseText == this.lastText ?        this.decay * this.options.decay : 1);      this.lastText = request.responseText;    }    this.timer = setTimeout(this.onTimerEvent.bind(this),      this.decay * this.frequency * 1000);  },  onTimerEvent: function() {    this.updater = new Ajax.Updater(this.container, this.url, this.options);  }});document.getElementsByClassName = function(className, parentElement) {  var children = ($(parentElement) || document.body).getElementsByTagName('*');  return $A(children).inject([], function(elements, child) {    if (child.className.match(new RegExp("(^|\s)" + className + "(\s|$)")))      elements.push(child);    return elements;  });}/*--------------------------------------------------------------------------*/if (!window.Element) {  var Element = new Object();}Object.extend(Element, {  visible: function(element) {    return $(element).style.display != 'none';  },  toggle: function() {    for (var i = 0; i < arguments.length; i++) {      var element = $(arguments[i]);      Element[Element.visible(element) ? 'hide' : 'show'](element);    }  },  hide: function() {    for (var i = 0; i < arguments.length; i++) {      var element = $(arguments[i]);      element.style.display = 'none';    }  },  show: function() {    for (var i = 0; i < arguments.length; i++) {      var element = $(arguments[i]);      element.style.display = '';    }  },  remove: function(element) {    element = $(element);    element.parentNode.removeChild(element);  },  update: function(element, html) {    $(element).innerHTML = html.stripScripts();    setTimeout(function() {html.evalScripts()}, 10);  },  getHeight: function(element) {    element = $(element);    return element.offsetHeight;  },  classNames: function(element) {    return new Element.ClassNames(element);  },  hasClassName: function(element, className) {    if (!(element = $(element))) return;    return Element.classNames(element).include(className);  },  addClassName: function(element, className) {    if (!(element = $(element))) return;    return Element.classNames(element).add(className);  },  removeClassName: function(element, className) {    if (!(element = $(element))) return;    return Element.classNames(element).remove(className);  },  // removes whitespace-only text node children  cleanWhitespace: function(element) {    element = $(element);    for (var i = 0; i < element.childNodes.length; i++) {      var node = element.childNodes[i];      if (node.nodeType == 3 && !/S/.test(node.nodeValue))        Element.remove(node);    }  },  empty: function(element) {    return $(element).innerHTML.match(/^s*$/);  },  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 (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;  }});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) {        if (this.element.tagName.toLowerCase() == 'tbody') {          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 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 (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();    var parameter = Form.Element.Serializers[method](element);    if (parameter)      return parameter[1];  }}Form.Element.Serializers = {  input: function(element) {    switch (element.type.toLowerCase()) {      case 'submit':      case 'hidden':      case 'password':      case 'text':        return Form.Element.Serializers.textarea(element);      case 'checkbox':      case 'radio':        return Form.Element.Serializers.inputSelector(element);    }    return false;  },  inputSelector: function(element) {    if (element.checked)      return [element.name, element.value];  },  textarea: function(element) {    return [element.name, element.value];  },  select: function(element) {    return Form.Element.Serializers[element.type == 'select-one' ?      'selectOne' : 'selectMany'](element);  },  selectOne: function(element) {    var value = '', opt, index = element.selectedIndex;    if (index >= 0) {      opt = element.options[index];      value = opt.value;      if (!value && !('value' in opt))        value = opt.text;    }    return [element.name, value];  },  selectMany: function(element) {    var value = new Array();    for (var i = 0; i < element.length; i++) {      var opt = element.options[i];      if (opt.selected) {        var optValue = opt.value;        if (!optValue && !('value' in opt))          optValue = opt.text;        value.push(optValue);      }    }    return [element.name, value];  }}/*--------------------------------------------------------------------------*/var $F = Form.Element.getValue;/*--------------------------------------------------------------------------*/Abstract.TimedObserver = function() {}Abstract.TimedObserver.prototype = {  initialize: function(element, frequency, callback) {    this.frequency = frequency;    this.element   = $(element);    this.callback  = callback;    this.lastValue = this.getValue();    this.registerCallback();  },  registerCallback: function() {    setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);  },  onTimerEvent: function() {    var value = this.getValue();    if (this.lastValue != value) {      this.callback(this.element, value);      this.lastValue = value;    }  }}Form.Element.Observer = Class.create();Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {  getValue: function() {    return Form.Element.getValue(this.element);  }});Form.Observer = Class.create();Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {  getValue: function() {    return Form.serialize(this.element);  }});/*--------------------------------------------------------------------------*/Abstract.EventObserver = function() {}Abstract.EventObserver.prototype = {  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() {    var elements = Form.getElements(this.element);    for (var i = 0; i < elements.length; i++)      this.registerCallback(elements[i]);  },  registerCallback: function(element) {    if (element.type) {      switch (element.type.toLowerCase()) {        case 'checkbox':        case 'radio':          Event.observe(element, 'click', this.onElementEvent.bind(this));          break;        case 'password':        case 'text':        case 'textarea':        case 'select-one':        case 'select-multiple':          Event.observe(element, 'change', this.onElementEvent.bind(this));          break;      }    }  }}Form.Element.EventObserver = Class.create();Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {  getValue: function() {    return Form.Element.getValue(this.element);  }});Form.EventObserver = Class.create();Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {  getValue: function() {    return Form.serialize(this.element);  }});if (!window.Event) {  var Event = new Object();}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,  element: function(event) {    return event.target || event.srcElement;  },  isLeftClick: function(event) {    return (((event.which) && (event.which == 1)) ||            ((event.button) && (event.button == 1)));  },  pointerX: function(event) {    return event.pageX || (event.clientX +      (document.documentElement.scrollLeft || document.body.scrollLeft));  },  pointerY: function(event) {    return event.pageY || (event.clientY +      (document.documentElement.scrollTop || document.body.scrollTop));  },  stop: function(event) {    if (event.preventDefault) {      event.preventDefault();      event.stopPropagation();    } else {      event.returnValue = false;      event.cancelBubble = true;    }  },  // find the first node with the given tagName, starting from the  // node the event was triggered on; traverses the DOM upwards  findElement: function(event, tagName) {    var element = Event.element(event);    while (element.parentNode && (!element.tagName ||        (element.tagName.toUpperCase() != tagName.toUpperCase())))      element = element.parentNode;    return element;  },  observers: false,  _observeAndCache: function(element, name, observer, useCapture) {    if (!this.observers) this.observers = [];    if (element.addEventListener) {      this.observers.push([element, name, observer, useCapture]);      element.addEventListener(name, observer, useCapture);    } else if (element.attachEvent) {      this.observers.push([element, name, observer, useCapture]);      element.attachEvent('on' + name, observer);    }  },  unloadCache: function() {    if (!Event.observers) return;    for (var i = 0; i < Event.observers.length; i++) {      Event.stopObserving.apply(this, Event.observers[i]);      Event.observers[i][0] = null;    }    Event.observers = false;  },  observe: function(element, name, observer, useCapture) {    var element = $(element);    useCapture = useCapture || false;    if (name == 'keypress' &&        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)        || element.attachEvent))      name = 'keydown';    this._observeAndCache(element, name, observer, useCapture);  },  stopObserving: function(element, name, observer, useCapture) {    var element = $(element);    useCapture = useCapture || false;    if (name == 'keypress' &&        (navigator.appVersion.match(/Konqueror|Safari|KHTML/)        || element.detachEvent))      name = 'keydown';    if (element.removeEventListener) {      element.removeEventListener(name, observer, useCapture);    } else if (element.detachEvent) {      element.detachEvent('on' + name, observer);    }  }});/* prevent memory leaks in IE */Event.observe(window, 'unload', Event.unloadCache, false);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;  },  realOffset: function(element) {    var valueT = 0, valueL = 0;    do {      valueT += element.scrollTop  || 0;      valueL += element.scrollLeft || 0;      element = element.parentNode;    } while (element);    return [valueL, valueT];  },  cumulativeOffset: function(element) {    var valueT = 0, valueL = 0;    do {      valueT += element.offsetTop  || 0;      valueL += element.offsetLeft || 0;      element = element.offsetParent;    } while (element);    return [valueL, valueT];  },  positionedOffset: function(element) {    var valueT = 0, valueL = 0;    do {      valueT += element.offsetTop  || 0;      valueL += element.offsetLeft || 0;      element = element.offsetParent;      if (element) {        p = Element.getStyle(element, 'position');        if (p == 'relative' || p == 'absolute') break;      }    } while (element);    return [valueL, valueT];  },  offsetParent: 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;  },  // 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 = this.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 = this.realOffset(element);    this.xcomp = x + offsetcache[0] - this.deltaX;    this.ycomp = y + offsetcache[1] - this.deltaY;    this.offset = this.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;  },  clone: function(source, target) {    source = $(source);    target = $(target);    target.style.position = 'absolute';    var offsets = this.cumulativeOffset(source);    target.style.top    = offsets[1] + 'px';    target.style.left   = offsets[0] + 'px';    target.style.width  = source.offsetWidth + 'px';    target.style.height = source.offsetHeight + 'px';  },  page: 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)        if (Element.getStyle(element,'position')=='absolute') break;    } while (element = element.offsetParent);    element = forElement;    do {      valueT -= element.scrollTop  || 0;      valueL -= element.scrollLeft || 0;    } while (element = element.parentNode);    return [valueL, valueT];  },  clone: function(source, target) {    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 = Position.page(source);    // find coordinate system to use    target = $(target);    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(target,'position') == 'absolute') {      parent = Position.offsetParent(target);      delta = Position.page(parent);    }    // 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)   target.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';    if(options.setTop)    target.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';    if(options.setWidth)  target.style.width = source.offsetWidth + 'px';    if(options.setHeight) target.style.height = source.offsetHeight + 'px';  },  absolutize: function(element) {    element = $(element);    if (element.style.position == 'absolute') return;    Position.prepare();    var offsets = Position.positionedOffset(element);    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';;  },  relativize: function(element) {    element = $(element);    if (element.style.position == 'relative') return;    Position.prepare();    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;  }}// Safari returns margins on body which is incorrect if the child is absolutely// positioned.  For performance reasons, redefine Position.cumulativeOffset for// KHTML/WebKit only.if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {  Position.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 [valueL, valueT];  }}</script><!--    This script downloaded from www.JavaScriptBank.com    Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->