client/player/js/ui/jquery.ui.accordion.js
changeset 57 3a3c15c462f8
parent 1 436d4791d7ac
parent 51 2d6866072851
--- a/client/player/js/ui/jquery.ui.accordion.js	Tue Jun 15 01:33:03 2010 +0200
+++ b/client/player/js/ui/jquery.ui.accordion.js	Mon Jul 12 12:01:22 2010 +0200
@@ -1,506 +1,506 @@
-/*
- * jQuery UI Accordion 1.8.1
- *
- * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
- * Dual licensed under the MIT (MIT-LICENSE.txt)
- * and GPL (GPL-LICENSE.txt) licenses.
- *
- * http://docs.jquery.com/UI/Accordion
- *
- * Depends:
- *	jquery.ui.core.js
- *	jquery.ui.widget.js
- */
-(function($) {
-
-$.widget("ui.accordion", {
-	options: {
-		active: 0,
-		animated: 'slide',
-		autoHeight: true,
-		clearStyle: false,
-		collapsible: false,
-		event: "click",
-		fillSpace: false,
-		header: "> li > :first-child,> :not(li):even",
-		icons: {
-			header: "ui-icon-triangle-1-e",
-			headerSelected: "ui-icon-triangle-1-s"
-		},
-		navigation: false,
-		navigationFilter: function() {
-			return this.href.toLowerCase() == location.href.toLowerCase();
-		}
-	},
-	_create: function() {
-
-		var o = this.options, self = this;
-		this.running = 0;
-
-		this.element.addClass("ui-accordion ui-widget ui-helper-reset");
-		
-		// in lack of child-selectors in CSS we need to mark top-LIs in a UL-accordion for some IE-fix
-		if (this.element[0].nodeName == "UL") {
-			this.element.children("li").addClass("ui-accordion-li-fix");
-		}
-
-		this.headers = this.element.find(o.header).addClass("ui-accordion-header ui-helper-reset ui-state-default ui-corner-all")
-			.bind("mouseenter.accordion", function(){ $(this).addClass('ui-state-hover'); })
-			.bind("mouseleave.accordion", function(){ $(this).removeClass('ui-state-hover'); })
-			.bind("focus.accordion", function(){ $(this).addClass('ui-state-focus'); })
-			.bind("blur.accordion", function(){ $(this).removeClass('ui-state-focus'); });
-
-		this.headers
-			.next()
-				.addClass("ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom");
-
-		if ( o.navigation ) {
-			var current = this.element.find("a").filter(o.navigationFilter);
-			if ( current.length ) {
-				var header = current.closest(".ui-accordion-header");
-				if ( header.length ) {
-					// anchor within header
-					this.active = header;
-				} else {
-					// anchor within content
-					this.active = current.closest(".ui-accordion-content").prev();
-				}
-			}
-		}
-
-		this.active = this._findActive(this.active || o.active).toggleClass("ui-state-default").toggleClass("ui-state-active").toggleClass("ui-corner-all").toggleClass("ui-corner-top");
-		this.active.next().addClass('ui-accordion-content-active');
-
-		//Append icon elements
-		this._createIcons();
-
-		this.resize();
-
-		//ARIA
-		this.element.attr('role','tablist');
-
-		this.headers
-			.attr('role','tab')
-			.bind('keydown', function(event) { return self._keydown(event); })
-			.next()
-			.attr('role','tabpanel');
-
-		this.headers
-			.not(this.active || "")
-			.attr('aria-expanded','false')
-			.attr("tabIndex", "-1")
-			.next()
-			.hide();
-
-		// make sure at least one header is in the tab order
-		if (!this.active.length) {
-			this.headers.eq(0).attr('tabIndex','0');
-		} else {
-			this.active
-				.attr('aria-expanded','true')
-				.attr('tabIndex', '0');
-		}
-
-		// only need links in taborder for Safari
-		if (!$.browser.safari)
-			this.headers.find('a').attr('tabIndex','-1');
-
-		if (o.event) {
-			this.headers.bind((o.event) + ".accordion", function(event) {
-				self._clickHandler.call(self, event, this);
-				event.preventDefault();
-			});
-		}
-
-	},
-	
-	_createIcons: function() {
-		var o = this.options;
-		if (o.icons) {
-			$("<span/>").addClass("ui-icon " + o.icons.header).prependTo(this.headers);
-			this.active.find(".ui-icon").toggleClass(o.icons.header).toggleClass(o.icons.headerSelected);
-			this.element.addClass("ui-accordion-icons");
-		}
-	},
-	
-	_destroyIcons: function() {
-		this.headers.children(".ui-icon").remove();
-		this.element.removeClass("ui-accordion-icons");
-	},
-
-	destroy: function() {
-		var o = this.options;
-
-		this.element
-			.removeClass("ui-accordion ui-widget ui-helper-reset")
-			.removeAttr("role")
-			.unbind('.accordion')
-			.removeData('accordion');
-
-		this.headers
-			.unbind(".accordion")
-			.removeClass("ui-accordion-header ui-helper-reset ui-state-default ui-corner-all ui-state-active ui-corner-top")
-			.removeAttr("role").removeAttr("aria-expanded").removeAttr("tabIndex");
-
-		this.headers.find("a").removeAttr("tabIndex");
-		this._destroyIcons();
-		var contents = this.headers.next().css("display", "").removeAttr("role").removeClass("ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content ui-accordion-content-active");
-		if (o.autoHeight || o.fillHeight) {
-			contents.css("height", "");
-		}
-
-		return this;
-	},
-	
-	_setOption: function(key, value) {
-		$.Widget.prototype._setOption.apply(this, arguments);
-			
-		if (key == "active") {
-			this.activate(value);
-		}
-		if (key == "icons") {
-			this._destroyIcons();
-			if (value) {
-				this._createIcons();
-			}
-		}
-		
-	},
-
-	_keydown: function(event) {
-
-		var o = this.options, keyCode = $.ui.keyCode;
-
-		if (o.disabled || event.altKey || event.ctrlKey)
-			return;
-
-		var length = this.headers.length;
-		var currentIndex = this.headers.index(event.target);
-		var toFocus = false;
-
-		switch(event.keyCode) {
-			case keyCode.RIGHT:
-			case keyCode.DOWN:
-				toFocus = this.headers[(currentIndex + 1) % length];
-				break;
-			case keyCode.LEFT:
-			case keyCode.UP:
-				toFocus = this.headers[(currentIndex - 1 + length) % length];
-				break;
-			case keyCode.SPACE:
-			case keyCode.ENTER:
-				this._clickHandler({ target: event.target }, event.target);
-				event.preventDefault();
-		}
-
-		if (toFocus) {
-			$(event.target).attr('tabIndex','-1');
-			$(toFocus).attr('tabIndex','0');
-			toFocus.focus();
-			return false;
-		}
-
-		return true;
-
-	},
-
-	resize: function() {
-
-		var o = this.options, maxHeight;
-
-		if (o.fillSpace) {
-			
-			if($.browser.msie) { var defOverflow = this.element.parent().css('overflow'); this.element.parent().css('overflow', 'hidden'); }
-			maxHeight = this.element.parent().height();
-			if($.browser.msie) { this.element.parent().css('overflow', defOverflow); }
-	
-			this.headers.each(function() {
-				maxHeight -= $(this).outerHeight(true);
-			});
-
-			this.headers.next().each(function() {
-    		   $(this).height(Math.max(0, maxHeight - $(this).innerHeight() + $(this).height()));
-			}).css('overflow', 'auto');
-
-		} else if ( o.autoHeight ) {
-			maxHeight = 0;
-			this.headers.next().each(function() {
-				maxHeight = Math.max(maxHeight, $(this).height());
-			}).height(maxHeight);
-		}
-
-		return this;
-	},
-
-	activate: function(index) {
-		// TODO this gets called on init, changing the option without an explicit call for that
-		this.options.active = index;
-		// call clickHandler with custom event
-		var active = this._findActive(index)[0];
-		this._clickHandler({ target: active }, active);
-
-		return this;
-	},
-
-	_findActive: function(selector) {
-		return selector
-			? typeof selector == "number"
-				? this.headers.filter(":eq(" + selector + ")")
-				: this.headers.not(this.headers.not(selector))
-			: selector === false
-				? $([])
-				: this.headers.filter(":eq(0)");
-	},
-
-	// TODO isn't event.target enough? why the seperate target argument?
-	_clickHandler: function(event, target) {
-
-		var o = this.options;
-		if (o.disabled)
-			return;
-
-		// called only when using activate(false) to close all parts programmatically
-		if (!event.target) {
-			if (!o.collapsible)
-				return;
-			this.active.removeClass("ui-state-active ui-corner-top").addClass("ui-state-default ui-corner-all")
-				.find(".ui-icon").removeClass(o.icons.headerSelected).addClass(o.icons.header);
-			this.active.next().addClass('ui-accordion-content-active');
-			var toHide = this.active.next(),
-				data = {
-					options: o,
-					newHeader: $([]),
-					oldHeader: o.active,
-					newContent: $([]),
-					oldContent: toHide
-				},
-				toShow = (this.active = $([]));
-			this._toggle(toShow, toHide, data);
-			return;
-		}
-
-		// get the click target
-		var clicked = $(event.currentTarget || target);
-		var clickedIsActive = clicked[0] == this.active[0];
-		
-		// TODO the option is changed, is that correct?
-		// TODO if it is correct, shouldn't that happen after determining that the click is valid?
-		o.active = o.collapsible && clickedIsActive ? false : $('.ui-accordion-header', this.element).index(clicked);
-
-		// if animations are still active, or the active header is the target, ignore click
-		if (this.running || (!o.collapsible && clickedIsActive)) {
-			return;
-		}
-
-		// switch classes
-		this.active.removeClass("ui-state-active ui-corner-top").addClass("ui-state-default ui-corner-all")
-			.find(".ui-icon").removeClass(o.icons.headerSelected).addClass(o.icons.header);
-		if (!clickedIsActive) {
-			clicked.removeClass("ui-state-default ui-corner-all").addClass("ui-state-active ui-corner-top")
-				.find(".ui-icon").removeClass(o.icons.header).addClass(o.icons.headerSelected);
-			clicked.next().addClass('ui-accordion-content-active');
-		}
-
-		// find elements to show and hide
-		var toShow = clicked.next(),
-			toHide = this.active.next(),
-			data = {
-				options: o,
-				newHeader: clickedIsActive && o.collapsible ? $([]) : clicked,
-				oldHeader: this.active,
-				newContent: clickedIsActive && o.collapsible ? $([]) : toShow,
-				oldContent: toHide
-			},
-			down = this.headers.index( this.active[0] ) > this.headers.index( clicked[0] );
-
-		this.active = clickedIsActive ? $([]) : clicked;
-		this._toggle(toShow, toHide, data, clickedIsActive, down);
-
-		return;
-
-	},
-
-	_toggle: function(toShow, toHide, data, clickedIsActive, down) {
-
-		var o = this.options, self = this;
-
-		this.toShow = toShow;
-		this.toHide = toHide;
-		this.data = data;
-
-		var complete = function() { if(!self) return; return self._completed.apply(self, arguments); };
-
-		// trigger changestart event
-		this._trigger("changestart", null, this.data);
-
-		// count elements to animate
-		this.running = toHide.size() === 0 ? toShow.size() : toHide.size();
-
-		if (o.animated) {
-
-			var animOptions = {};
-
-			if ( o.collapsible && clickedIsActive ) {
-				animOptions = {
-					toShow: $([]),
-					toHide: toHide,
-					complete: complete,
-					down: down,
-					autoHeight: o.autoHeight || o.fillSpace
-				};
-			} else {
-				animOptions = {
-					toShow: toShow,
-					toHide: toHide,
-					complete: complete,
-					down: down,
-					autoHeight: o.autoHeight || o.fillSpace
-				};
-			}
-
-			if (!o.proxied) {
-				o.proxied = o.animated;
-			}
-
-			if (!o.proxiedDuration) {
-				o.proxiedDuration = o.duration;
-			}
-
-			o.animated = $.isFunction(o.proxied) ?
-				o.proxied(animOptions) : o.proxied;
-
-			o.duration = $.isFunction(o.proxiedDuration) ?
-				o.proxiedDuration(animOptions) : o.proxiedDuration;
-
-			var animations = $.ui.accordion.animations,
-				duration = o.duration,
-				easing = o.animated;
-
-			if (easing && !animations[easing] && !$.easing[easing]) {
-				easing = 'slide';
-			}
-			if (!animations[easing]) {
-				animations[easing] = function(options) {
-					this.slide(options, {
-						easing: easing,
-						duration: duration || 700
-					});
-				};
-			}
-
-			animations[easing](animOptions);
-
-		} else {
-
-			if (o.collapsible && clickedIsActive) {
-				toShow.toggle();
-			} else {
-				toHide.hide();
-				toShow.show();
-			}
-
-			complete(true);
-
-		}
-
-		// TODO assert that the blur and focus triggers are really necessary, remove otherwise
-		toHide.prev().attr('aria-expanded','false').attr("tabIndex", "-1").blur();
-		toShow.prev().attr('aria-expanded','true').attr("tabIndex", "0").focus();
-
-	},
-
-	_completed: function(cancel) {
-
-		var o = this.options;
-
-		this.running = cancel ? 0 : --this.running;
-		if (this.running) return;
-
-		if (o.clearStyle) {
-			this.toShow.add(this.toHide).css({
-				height: "",
-				overflow: ""
-			});
-		}
-		
-		// other classes are removed before the animation; this one needs to stay until completed
-		this.toHide.removeClass("ui-accordion-content-active");
-
-		this._trigger('change', null, this.data);
-	}
-
-});
-
-
-$.extend($.ui.accordion, {
-	version: "1.8.1",
-	animations: {
-		slide: function(options, additions) {
-			options = $.extend({
-				easing: "swing",
-				duration: 300
-			}, options, additions);
-			if ( !options.toHide.size() ) {
-				options.toShow.animate({height: "show"}, options);
-				return;
-			}
-			if ( !options.toShow.size() ) {
-				options.toHide.animate({height: "hide"}, options);
-				return;
-			}
-			var overflow = options.toShow.css('overflow'),
-				percentDone = 0,
-				showProps = {},
-				hideProps = {},
-				fxAttrs = [ "height", "paddingTop", "paddingBottom" ],
-				originalWidth;
-			// fix width before calculating height of hidden element
-			var s = options.toShow;
-			originalWidth = s[0].style.width;
-			s.width( parseInt(s.parent().width(),10) - parseInt(s.css("paddingLeft"),10) - parseInt(s.css("paddingRight"),10) - (parseInt(s.css("borderLeftWidth"),10) || 0) - (parseInt(s.css("borderRightWidth"),10) || 0) );
-			
-			$.each(fxAttrs, function(i, prop) {
-				hideProps[prop] = 'hide';
-				
-				var parts = ('' + $.css(options.toShow[0], prop)).match(/^([\d+-.]+)(.*)$/);
-				showProps[prop] = {
-					value: parts[1],
-					unit: parts[2] || 'px'
-				};
-			});
-			options.toShow.css({ height: 0, overflow: 'hidden' }).show();
-			options.toHide.filter(":hidden").each(options.complete).end().filter(":visible").animate(hideProps,{
-				step: function(now, settings) {
-					// only calculate the percent when animating height
-					// IE gets very inconsistent results when animating elements
-					// with small values, which is common for padding
-					if (settings.prop == 'height') {
-						percentDone = ( settings.end - settings.start === 0 ) ? 0 :
-							(settings.now - settings.start) / (settings.end - settings.start);
-					}
-					
-					options.toShow[0].style[settings.prop] =
-						(percentDone * showProps[settings.prop].value) + showProps[settings.prop].unit;
-				},
-				duration: options.duration,
-				easing: options.easing,
-				complete: function() {
-					if ( !options.autoHeight ) {
-						options.toShow.css("height", "");
-					}
-					options.toShow.css("width", originalWidth);
-					options.toShow.css({overflow: overflow});
-					options.complete();
-				}
-			});
-		},
-		bounceslide: function(options) {
-			this.slide(options, {
-				easing: options.down ? "easeOutBounce" : "swing",
-				duration: options.down ? 1000 : 200
-			});
-		}
-	}
-});
-
-})(jQuery);
+/*
+ * jQuery UI Accordion 1.8.1
+ *
+ * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * and GPL (GPL-LICENSE.txt) licenses.
+ *
+ * http://docs.jquery.com/UI/Accordion
+ *
+ * Depends:
+ *	jquery.ui.core.js
+ *	jquery.ui.widget.js
+ */
+(function($) {
+
+$.widget("ui.accordion", {
+	options: {
+		active: 0,
+		animated: 'slide',
+		autoHeight: true,
+		clearStyle: false,
+		collapsible: false,
+		event: "click",
+		fillSpace: false,
+		header: "> li > :first-child,> :not(li):even",
+		icons: {
+			header: "ui-icon-triangle-1-e",
+			headerSelected: "ui-icon-triangle-1-s"
+		},
+		navigation: false,
+		navigationFilter: function() {
+			return this.href.toLowerCase() == location.href.toLowerCase();
+		}
+	},
+	_create: function() {
+
+		var o = this.options, self = this;
+		this.running = 0;
+
+		this.element.addClass("ui-accordion ui-widget ui-helper-reset");
+		
+		// in lack of child-selectors in CSS we need to mark top-LIs in a UL-accordion for some IE-fix
+		if (this.element[0].nodeName == "UL") {
+			this.element.children("li").addClass("ui-accordion-li-fix");
+		}
+
+		this.headers = this.element.find(o.header).addClass("ui-accordion-header ui-helper-reset ui-state-default ui-corner-all")
+			.bind("mouseenter.accordion", function(){ $(this).addClass('ui-state-hover'); })
+			.bind("mouseleave.accordion", function(){ $(this).removeClass('ui-state-hover'); })
+			.bind("focus.accordion", function(){ $(this).addClass('ui-state-focus'); })
+			.bind("blur.accordion", function(){ $(this).removeClass('ui-state-focus'); });
+
+		this.headers
+			.next()
+				.addClass("ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom");
+
+		if ( o.navigation ) {
+			var current = this.element.find("a").filter(o.navigationFilter);
+			if ( current.length ) {
+				var header = current.closest(".ui-accordion-header");
+				if ( header.length ) {
+					// anchor within header
+					this.active = header;
+				} else {
+					// anchor within content
+					this.active = current.closest(".ui-accordion-content").prev();
+				}
+			}
+		}
+
+		this.active = this._findActive(this.active || o.active).toggleClass("ui-state-default").toggleClass("ui-state-active").toggleClass("ui-corner-all").toggleClass("ui-corner-top");
+		this.active.next().addClass('ui-accordion-content-active');
+
+		//Append icon elements
+		this._createIcons();
+
+		this.resize();
+
+		//ARIA
+		this.element.attr('role','tablist');
+
+		this.headers
+			.attr('role','tab')
+			.bind('keydown', function(event) { return self._keydown(event); })
+			.next()
+			.attr('role','tabpanel');
+
+		this.headers
+			.not(this.active || "")
+			.attr('aria-expanded','false')
+			.attr("tabIndex", "-1")
+			.next()
+			.hide();
+
+		// make sure at least one header is in the tab order
+		if (!this.active.length) {
+			this.headers.eq(0).attr('tabIndex','0');
+		} else {
+			this.active
+				.attr('aria-expanded','true')
+				.attr('tabIndex', '0');
+		}
+
+		// only need links in taborder for Safari
+		if (!$.browser.safari)
+			this.headers.find('a').attr('tabIndex','-1');
+
+		if (o.event) {
+			this.headers.bind((o.event) + ".accordion", function(event) {
+				self._clickHandler.call(self, event, this);
+				event.preventDefault();
+			});
+		}
+
+	},
+	
+	_createIcons: function() {
+		var o = this.options;
+		if (o.icons) {
+			$("<span/>").addClass("ui-icon " + o.icons.header).prependTo(this.headers);
+			this.active.find(".ui-icon").toggleClass(o.icons.header).toggleClass(o.icons.headerSelected);
+			this.element.addClass("ui-accordion-icons");
+		}
+	},
+	
+	_destroyIcons: function() {
+		this.headers.children(".ui-icon").remove();
+		this.element.removeClass("ui-accordion-icons");
+	},
+
+	destroy: function() {
+		var o = this.options;
+
+		this.element
+			.removeClass("ui-accordion ui-widget ui-helper-reset")
+			.removeAttr("role")
+			.unbind('.accordion')
+			.removeData('accordion');
+
+		this.headers
+			.unbind(".accordion")
+			.removeClass("ui-accordion-header ui-helper-reset ui-state-default ui-corner-all ui-state-active ui-corner-top")
+			.removeAttr("role").removeAttr("aria-expanded").removeAttr("tabIndex");
+
+		this.headers.find("a").removeAttr("tabIndex");
+		this._destroyIcons();
+		var contents = this.headers.next().css("display", "").removeAttr("role").removeClass("ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content ui-accordion-content-active");
+		if (o.autoHeight || o.fillHeight) {
+			contents.css("height", "");
+		}
+
+		return this;
+	},
+	
+	_setOption: function(key, value) {
+		$.Widget.prototype._setOption.apply(this, arguments);
+			
+		if (key == "active") {
+			this.activate(value);
+		}
+		if (key == "icons") {
+			this._destroyIcons();
+			if (value) {
+				this._createIcons();
+			}
+		}
+		
+	},
+
+	_keydown: function(event) {
+
+		var o = this.options, keyCode = $.ui.keyCode;
+
+		if (o.disabled || event.altKey || event.ctrlKey)
+			return;
+
+		var length = this.headers.length;
+		var currentIndex = this.headers.index(event.target);
+		var toFocus = false;
+
+		switch(event.keyCode) {
+			case keyCode.RIGHT:
+			case keyCode.DOWN:
+				toFocus = this.headers[(currentIndex + 1) % length];
+				break;
+			case keyCode.LEFT:
+			case keyCode.UP:
+				toFocus = this.headers[(currentIndex - 1 + length) % length];
+				break;
+			case keyCode.SPACE:
+			case keyCode.ENTER:
+				this._clickHandler({ target: event.target }, event.target);
+				event.preventDefault();
+		}
+
+		if (toFocus) {
+			$(event.target).attr('tabIndex','-1');
+			$(toFocus).attr('tabIndex','0');
+			toFocus.focus();
+			return false;
+		}
+
+		return true;
+
+	},
+
+	resize: function() {
+
+		var o = this.options, maxHeight;
+
+		if (o.fillSpace) {
+			
+			if($.browser.msie) { var defOverflow = this.element.parent().css('overflow'); this.element.parent().css('overflow', 'hidden'); }
+			maxHeight = this.element.parent().height();
+			if($.browser.msie) { this.element.parent().css('overflow', defOverflow); }
+	
+			this.headers.each(function() {
+				maxHeight -= $(this).outerHeight(true);
+			});
+
+			this.headers.next().each(function() {
+    		   $(this).height(Math.max(0, maxHeight - $(this).innerHeight() + $(this).height()));
+			}).css('overflow', 'auto');
+
+		} else if ( o.autoHeight ) {
+			maxHeight = 0;
+			this.headers.next().each(function() {
+				maxHeight = Math.max(maxHeight, $(this).height());
+			}).height(maxHeight);
+		}
+
+		return this;
+	},
+
+	activate: function(index) {
+		// TODO this gets called on init, changing the option without an explicit call for that
+		this.options.active = index;
+		// call clickHandler with custom event
+		var active = this._findActive(index)[0];
+		this._clickHandler({ target: active }, active);
+
+		return this;
+	},
+
+	_findActive: function(selector) {
+		return selector
+			? typeof selector == "number"
+				? this.headers.filter(":eq(" + selector + ")")
+				: this.headers.not(this.headers.not(selector))
+			: selector === false
+				? $([])
+				: this.headers.filter(":eq(0)");
+	},
+
+	// TODO isn't event.target enough? why the seperate target argument?
+	_clickHandler: function(event, target) {
+
+		var o = this.options;
+		if (o.disabled)
+			return;
+
+		// called only when using activate(false) to close all parts programmatically
+		if (!event.target) {
+			if (!o.collapsible)
+				return;
+			this.active.removeClass("ui-state-active ui-corner-top").addClass("ui-state-default ui-corner-all")
+				.find(".ui-icon").removeClass(o.icons.headerSelected).addClass(o.icons.header);
+			this.active.next().addClass('ui-accordion-content-active');
+			var toHide = this.active.next(),
+				data = {
+					options: o,
+					newHeader: $([]),
+					oldHeader: o.active,
+					newContent: $([]),
+					oldContent: toHide
+				},
+				toShow = (this.active = $([]));
+			this._toggle(toShow, toHide, data);
+			return;
+		}
+
+		// get the click target
+		var clicked = $(event.currentTarget || target);
+		var clickedIsActive = clicked[0] == this.active[0];
+		
+		// TODO the option is changed, is that correct?
+		// TODO if it is correct, shouldn't that happen after determining that the click is valid?
+		o.active = o.collapsible && clickedIsActive ? false : $('.ui-accordion-header', this.element).index(clicked);
+
+		// if animations are still active, or the active header is the target, ignore click
+		if (this.running || (!o.collapsible && clickedIsActive)) {
+			return;
+		}
+
+		// switch classes
+		this.active.removeClass("ui-state-active ui-corner-top").addClass("ui-state-default ui-corner-all")
+			.find(".ui-icon").removeClass(o.icons.headerSelected).addClass(o.icons.header);
+		if (!clickedIsActive) {
+			clicked.removeClass("ui-state-default ui-corner-all").addClass("ui-state-active ui-corner-top")
+				.find(".ui-icon").removeClass(o.icons.header).addClass(o.icons.headerSelected);
+			clicked.next().addClass('ui-accordion-content-active');
+		}
+
+		// find elements to show and hide
+		var toShow = clicked.next(),
+			toHide = this.active.next(),
+			data = {
+				options: o,
+				newHeader: clickedIsActive && o.collapsible ? $([]) : clicked,
+				oldHeader: this.active,
+				newContent: clickedIsActive && o.collapsible ? $([]) : toShow,
+				oldContent: toHide
+			},
+			down = this.headers.index( this.active[0] ) > this.headers.index( clicked[0] );
+
+		this.active = clickedIsActive ? $([]) : clicked;
+		this._toggle(toShow, toHide, data, clickedIsActive, down);
+
+		return;
+
+	},
+
+	_toggle: function(toShow, toHide, data, clickedIsActive, down) {
+
+		var o = this.options, self = this;
+
+		this.toShow = toShow;
+		this.toHide = toHide;
+		this.data = data;
+
+		var complete = function() { if(!self) return; return self._completed.apply(self, arguments); };
+
+		// trigger changestart event
+		this._trigger("changestart", null, this.data);
+
+		// count elements to animate
+		this.running = toHide.size() === 0 ? toShow.size() : toHide.size();
+
+		if (o.animated) {
+
+			var animOptions = {};
+
+			if ( o.collapsible && clickedIsActive ) {
+				animOptions = {
+					toShow: $([]),
+					toHide: toHide,
+					complete: complete,
+					down: down,
+					autoHeight: o.autoHeight || o.fillSpace
+				};
+			} else {
+				animOptions = {
+					toShow: toShow,
+					toHide: toHide,
+					complete: complete,
+					down: down,
+					autoHeight: o.autoHeight || o.fillSpace
+				};
+			}
+
+			if (!o.proxied) {
+				o.proxied = o.animated;
+			}
+
+			if (!o.proxiedDuration) {
+				o.proxiedDuration = o.duration;
+			}
+
+			o.animated = $.isFunction(o.proxied) ?
+				o.proxied(animOptions) : o.proxied;
+
+			o.duration = $.isFunction(o.proxiedDuration) ?
+				o.proxiedDuration(animOptions) : o.proxiedDuration;
+
+			var animations = $.ui.accordion.animations,
+				duration = o.duration,
+				easing = o.animated;
+
+			if (easing && !animations[easing] && !$.easing[easing]) {
+				easing = 'slide';
+			}
+			if (!animations[easing]) {
+				animations[easing] = function(options) {
+					this.slide(options, {
+						easing: easing,
+						duration: duration || 700
+					});
+				};
+			}
+
+			animations[easing](animOptions);
+
+		} else {
+
+			if (o.collapsible && clickedIsActive) {
+				toShow.toggle();
+			} else {
+				toHide.hide();
+				toShow.show();
+			}
+
+			complete(true);
+
+		}
+
+		// TODO assert that the blur and focus triggers are really necessary, remove otherwise
+		toHide.prev().attr('aria-expanded','false').attr("tabIndex", "-1").blur();
+		toShow.prev().attr('aria-expanded','true').attr("tabIndex", "0").focus();
+
+	},
+
+	_completed: function(cancel) {
+
+		var o = this.options;
+
+		this.running = cancel ? 0 : --this.running;
+		if (this.running) return;
+
+		if (o.clearStyle) {
+			this.toShow.add(this.toHide).css({
+				height: "",
+				overflow: ""
+			});
+		}
+		
+		// other classes are removed before the animation; this one needs to stay until completed
+		this.toHide.removeClass("ui-accordion-content-active");
+
+		this._trigger('change', null, this.data);
+	}
+
+});
+
+
+$.extend($.ui.accordion, {
+	version: "1.8.1",
+	animations: {
+		slide: function(options, additions) {
+			options = $.extend({
+				easing: "swing",
+				duration: 300
+			}, options, additions);
+			if ( !options.toHide.size() ) {
+				options.toShow.animate({height: "show"}, options);
+				return;
+			}
+			if ( !options.toShow.size() ) {
+				options.toHide.animate({height: "hide"}, options);
+				return;
+			}
+			var overflow = options.toShow.css('overflow'),
+				percentDone = 0,
+				showProps = {},
+				hideProps = {},
+				fxAttrs = [ "height", "paddingTop", "paddingBottom" ],
+				originalWidth;
+			// fix width before calculating height of hidden element
+			var s = options.toShow;
+			originalWidth = s[0].style.width;
+			s.width( parseInt(s.parent().width(),10) - parseInt(s.css("paddingLeft"),10) - parseInt(s.css("paddingRight"),10) - (parseInt(s.css("borderLeftWidth"),10) || 0) - (parseInt(s.css("borderRightWidth"),10) || 0) );
+			
+			$.each(fxAttrs, function(i, prop) {
+				hideProps[prop] = 'hide';
+				
+				var parts = ('' + $.css(options.toShow[0], prop)).match(/^([\d+-.]+)(.*)$/);
+				showProps[prop] = {
+					value: parts[1],
+					unit: parts[2] || 'px'
+				};
+			});
+			options.toShow.css({ height: 0, overflow: 'hidden' }).show();
+			options.toHide.filter(":hidden").each(options.complete).end().filter(":visible").animate(hideProps,{
+				step: function(now, settings) {
+					// only calculate the percent when animating height
+					// IE gets very inconsistent results when animating elements
+					// with small values, which is common for padding
+					if (settings.prop == 'height') {
+						percentDone = ( settings.end - settings.start === 0 ) ? 0 :
+							(settings.now - settings.start) / (settings.end - settings.start);
+					}
+					
+					options.toShow[0].style[settings.prop] =
+						(percentDone * showProps[settings.prop].value) + showProps[settings.prop].unit;
+				},
+				duration: options.duration,
+				easing: options.easing,
+				complete: function() {
+					if ( !options.autoHeight ) {
+						options.toShow.css("height", "");
+					}
+					options.toShow.css("width", originalWidth);
+					options.toShow.css({overflow: overflow});
+					options.complete();
+				}
+			});
+		},
+		bounceslide: function(options) {
+			this.slide(options, {
+				easing: options.down ? "easeOutBounce" : "swing",
+				duration: options.down ? 1000 : 200
+			});
+		}
+	}
+});
+
+})(jQuery);