--- /dev/null
+/* Prototype JavaScript framework, version 1.3.1
+ * (c) 2005 Sam Stephenson <sam@conio.net>
+ *
+ * THIS FILE IS AUTOMATICALLY GENERATED. When sending patches, please diff
+ * against the source tree, available from the Prototype darcs repository.
+ *
+ * Prototype is freely distributable under the terms of an MIT-style license.
+ *
+ * For details, see the Prototype web site: http://prototype.conio.net/
+ *
+/*--------------------------------------------------------------------------*/
+
+var Prototype = {
+ Version: '1.3.1',
+ emptyFunction: function() {}
+}
+
+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.prototype.extend = function(object) {
+ return Object.extend.apply(this, [this, object]);
+}
+
+Function.prototype.bind = function(object) {
+ var __method = this;
+ return function() {
+ __method.apply(object, arguments);
+ }
+}
+
+Function.prototype.bindAsEventListener = function(object) {
+ var __method = this;
+ return function(event) {
+ __method.call(object, event || window.event);
+ }
+}
+
+Number.prototype.toColorPart = function() {
+ var digits = this.toString(16);
+ if (this < 16) return '0' + digits;
+ return digits;
+}
+
+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;
+}
+
+if (!Array.prototype.push) {
+ Array.prototype.push = function() {
+ var startLength = this.length;
+ for (var i = 0; i < arguments.length; i++)
+ this[startLength + i] = arguments[i];
+ return this.length;
+ }
+}
+
+if (!Function.prototype.apply) {
+ // Based on code from http://www.youngpup.net/
+ Function.prototype.apply = function(object, parameters) {
+ var parameterStrings = new Array();
+ if (!object) object = window;
+ if (!parameters) parameters = new Array();
+
+ for (var i = 0; i < parameters.length; i++)
+ parameterStrings[i] = 'parameters[' + i + ']';
+
+ object.__apply__ = this;
+ var result = eval('object.__apply__(' +
+ parameterStrings.join(', ') + ')');
+ object.__apply__ = null;
+
+ return result;
+ }
+}
+
+String.prototype.extend({
+ stripTags: function() {
+ return this.replace(/<\/?[^>]+>/gi, '');
+ },
+
+ 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].nodeValue;
+ }
+});
+
+var Ajax = {
+ getTransport: function() {
+ return Try.these(
+ function() {return new ActiveXObject('Msxml2.XMLHTTP')},
+ function() {return new ActiveXObject('Microsoft.XMLHTTP')},
+ function() {return new XMLHttpRequest()}
+ ) || false;
+ }
+}
+
+Ajax.Base = function() {};
+Ajax.Base.prototype = {
+ setOptions: function(options) {
+ this.options = {
+ method: 'post',
+ asynchronous: true,
+ parameters: ''
+ }.extend(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 = (new Ajax.Base()).extend({
+ 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 {
+ if (this.options.method == 'get')
+ url += '?' + parameters;
+
+ this.transport.open(this.options.method, 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) {
+ }
+ },
+
+ 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);
+ },
+
+ respondToReadyState: function(readyState) {
+ var event = Ajax.Request.Events[readyState];
+
+ if (event == 'Complete')
+ (this.options['on' + this.transport.status]
+ || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
+ || Prototype.emptyFunction)(this.transport);
+
+ (this.options['on' + event] || Prototype.emptyFunction)(this.transport);
+
+ /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
+ if (event == 'Complete')
+ this.transport.onreadystatechange = Prototype.emptyFunction;
+ }
+});
+
+Ajax.Updater = Class.create();
+Ajax.Updater.ScriptFragment = '(?:<script.*?>)((\n|.)*?)(?:<\/script>)';
+
+Ajax.Updater.prototype.extend(Ajax.Request.prototype).extend({
+ 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() {
+ this.updateContent();
+ onComplete(this.transport);
+ }).bind(this);
+
+ this.request(url);
+ },
+
+ updateContent: function() {
+ var receiver = this.responseIsSuccess() ?
+ this.containers.success : this.containers.failure;
+
+ var match = new RegExp(Ajax.Updater.ScriptFragment, 'img');
+ var response = this.transport.responseText.replace(match, '');
+ var scripts = this.transport.responseText.match(match);
+
+ if (receiver) {
+ if (this.options.insertion) {
+ new this.options.insertion(receiver, response);
+ } else {
+ receiver.innerHTML = response;
+ }
+ }
+
+ if (this.responseIsSuccess()) {
+ if (this.onComplete)
+ setTimeout((function() {this.onComplete(
+ this.transport)}).bind(this), 10);
+ }
+
+ if (this.options.evalScripts && scripts) {
+ match = new RegExp(Ajax.Updater.ScriptFragment, 'im');
+ setTimeout((function() {
+ for (var i = 0; i < scripts.length; i++)
+ eval(scripts[i].match(match)[1]);
+ }).bind(this), 10);
+ }
+ }
+});
+
+Ajax.PeriodicalUpdater = Class.create();
+Ajax.PeriodicalUpdater.prototype = (new Ajax.Base()).extend({
+ initialize: function(container, url, options) {
+ this.setOptions(options);
+ this.onComplete = this.options.onComplete;
+
+ this.frequency = (this.options.frequency || 2);
+ this.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 || Ajax.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) {
+ var children = document.getElementsByTagName('*') || document.all;
+ var elements = new Array();
+
+ for (var i = 0; i < children.length; i++) {
+ var child = children[i];
+ var classNames = child.className.split(' ');
+ for (var j = 0; j < classNames.length; j++) {
+ if (classNames[j] == className) {
+ elements.push(child);
+ break;
+ }
+ }
+ }
+
+ return elements;
+}
+
+/*--------------------------------------------------------------------------*/
+
+if (!window.Element) {
+ var Element = new Object();
+}
+
+Object.extend(Element, {
+ toggle: function() {
+ for (var i = 0; i < arguments.length; i++) {
+ var element = $(arguments[i]);
+ element.style.display =
+ (element.style.display == 'none' ? '' : 'none');
+ }
+ },
+
+ 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);
+ },
+
+ getHeight: function(element) {
+ element = $(element);
+ return element.offsetHeight;
+ },
+
+ hasClassName: function(element, className) {
+ element = $(element);
+ if (!element)
+ return;
+ var a = element.className.split(' ');
+ for (var i = 0; i < a.length; i++) {
+ if (a[i] == className)
+ return true;
+ }
+ return false;
+ },
+
+ addClassName: function(element, className) {
+ element = $(element);
+ Element.removeClassName(element, className);
+ element.className += ' ' + className;
+ },
+
+ removeClassName: function(element, className) {
+ element = $(element);
+ if (!element)
+ return;
+ var newClassName = '';
+ var a = element.className.split(' ');
+ for (var i = 0; i < a.length; i++) {
+ if (a[i] != className) {
+ if (i > 0)
+ newClassName += ' ';
+ newClassName += a[i];
+ }
+ }
+ element.className = newClassName;
+ },
+
+ // removes whitespace-only text node children
+ cleanWhitespace: function(element) {
+ var 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);
+ }
+ }
+});
+
+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;
+
+ if (this.adjacency && this.element.insertAdjacentHTML) {
+ this.element.insertAdjacentHTML(this.adjacency, this.content);
+ } else {
+ this.range = this.element.ownerDocument.createRange();
+ if (this.initializeRange) this.initializeRange();
+ this.fragment = this.range.createContextualFragment(this.content);
+ this.insertContent();
+ }
+ }
+}
+
+var Insertion = new Object();
+
+Insertion.Before = Class.create();
+Insertion.Before.prototype = (new Abstract.Insertion('beforeBegin')).extend({
+ initializeRange: function() {
+ this.range.setStartBefore(this.element);
+ },
+
+ insertContent: function() {
+ this.element.parentNode.insertBefore(this.fragment, this.element);
+ }
+});
+
+Insertion.Top = Class.create();
+Insertion.Top.prototype = (new Abstract.Insertion('afterBegin')).extend({
+ initializeRange: function() {
+ this.range.selectNodeContents(this.element);
+ this.range.collapse(true);
+ },
+
+ insertContent: function() {
+ this.element.insertBefore(this.fragment, this.element.firstChild);
+ }
+});
+
+Insertion.Bottom = Class.create();
+Insertion.Bottom.prototype = (new Abstract.Insertion('beforeEnd')).extend({
+ initializeRange: function() {
+ this.range.selectNodeContents(this.element);
+ this.range.collapse(this.element);
+ },
+
+ insertContent: function() {
+ this.element.appendChild(this.fragment);
+ }
+});
+
+Insertion.After = Class.create();
+Insertion.After.prototype = (new Abstract.Insertion('afterEnd')).extend({
+ initializeRange: function() {
+ this.range.setStartAfter(this.element);
+ },
+
+ insertContent: function() {
+ this.element.parentNode.insertBefore(this.fragment,
+ this.element.nextSibling);
+ }
+});
+
+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).focus();
+ $(element).select();
+ }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Form = {
+ serialize: function(form) {
+ var elements = Form.getElements($(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) {
+ var 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) {
+ var 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 = '';
+ }
+ },
+
+ focusFirstElement: function(form) {
+ var form = $(form);
+ var elements = Form.getElements(form);
+ for (var i = 0; i < elements.length; i++) {
+ var element = elements[i];
+ if (element.type != 'hidden' && !element.disabled) {
+ Field.activate(element);
+ break;
+ }
+ }
+ },
+
+ reset: function(form) {
+ $(form).reset();
+ }
+}
+
+Form.Element = {
+ serialize: function(element) {
+ var element = $(element);
+ var method = element.tagName.toLowerCase();
+ var parameter = Form.Element.Serializers[method](element);
+
+ if (parameter)
+ return encodeURIComponent(parameter[0]) + '=' +
+ encodeURIComponent(parameter[1]);
+ },
+
+ getValue: function(element) {
+ var 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) {
+ var value = '';
+ if (element.type == 'select-one') {
+ var index = element.selectedIndex;
+ if (index >= 0)
+ value = element.options[index].value || element.options[index].text;
+ } else {
+ value = new Array();
+ for (var i = 0; i < element.length; i++) {
+ var opt = element.options[i];
+ if (opt.selected)
+ value.push(opt.value || opt.text);
+ }
+ }
+ 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 = (new Abstract.TimedObserver()).extend({
+ getValue: function() {
+ return Form.Element.getValue(this.element);
+ }
+});
+
+Form.Observer = Class.create();
+Form.Observer.prototype = (new Abstract.TimedObserver()).extend({
+ 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':
+ element.target = this;
+ element.prev_onclick = element.onclick || Prototype.emptyFunction;
+ element.onclick = function() {
+ this.prev_onclick();
+ this.target.onElementEvent();
+ }
+ break;
+ case 'password':
+ case 'text':
+ case 'textarea':
+ case 'select-one':
+ case 'select-multiple':
+ element.target = this;
+ element.prev_onchange = element.onchange || Prototype.emptyFunction;
+ element.onchange = function() {
+ this.prev_onchange();
+ this.target.onElementEvent();
+ }
+ break;
+ }
+ }
+ }
+}
+
+Form.Element.EventObserver = Class.create();
+Form.Element.EventObserver.prototype = (new Abstract.EventObserver()).extend({
+ getValue: function() {
+ return Form.Element.getValue(this.element);
+ }
+});
+
+Form.EventObserver = Class.create();
+Form.EventObserver.prototype = (new Abstract.EventObserver()).extend({
+ 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;
+ }
+ },
+
+ // 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.indexOf('AppleWebKit') > 0)
+ || 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.indexOf('AppleWebKit') > 0)
+ || 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];
+ },
+
+ // 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';
+ }
+}
HCoop / clinton / lisp-on-lines.git / commitdiff