(function($){$.widget("ui.accordion",{init:function(){var options=this.options;if(options.navigation){var current=this.element.find("a").filter(options.navigationFilter);if(current.length){if(current.filter(options.header).length){options.active=current;}else{options.active=current.parent().parent().prev();current.addClass("current");}}}
options.headers=this.element.find(options.header);options.active=findActive(options.headers,options.active);if($.browser.msie){this.element.find('a').css('zoom','1');}
if(!this.element.hasClass("ui-accordion")){this.element.addClass("ui-accordion");$("<span class='ui-accordion-left'/>").insertBefore(options.headers);$("<span class='ui-accordion-right'/>").appendTo(options.headers);options.headers.addClass("ui-accordion-header").attr("tabindex","0");}
var maxHeight;if(options.fillSpace){maxHeight=this.element.parent().height();options.headers.each(function(){maxHeight-=$(this).outerHeight();});var maxPadding=0;options.headers.next().each(function(){maxPadding=Math.max(maxPadding,$(this).innerHeight()-$(this).height());}).height(maxHeight-maxPadding);}else if(options.autoHeight){maxHeight=0;options.headers.next().each(function(){maxHeight=Math.max(maxHeight,$(this).outerHeight());}).height(maxHeight);}
options.headers
.not(options.active||"")
.next()
.hide();options.active.parent().andSelf().addClass(options.selectedClass);if(options.event){this.element.bind((options.event)+".accordion",clickHandler);}},activate:function(index){clickHandler.call(this.element[0],{target:findActive(this.options.headers,index)[0]});},destroy:function(){this.options.headers.next().css("display","");if(this.options.fillSpace||this.options.autoHeight){this.options.headers.next().css("height","");}
$.removeData(this.element[0],"accordion");this.element.removeClass("ui-accordion").unbind(".accordion");}});function scopeCallback(callback,scope){return function(){return callback.apply(scope,arguments);};};function completed(cancel){if(!$.data(this,"accordion")){return;}
var instance=$.data(this,"accordion");var options=instance.options;options.running=cancel?0:--options.running;if(options.running){return;}
if(options.clearStyle){options.toShow.add(options.toHide).css({height:"",overflow:""});}
$(this).triggerHandler("accordionchange",[options.data],options.change);}
function toggle(toShow,toHide,data,clickedActive,down){var options=$.data(this,"accordion").options;options.toShow=toShow;options.toHide=toHide;options.data=data;var complete=scopeCallback(completed,this);options.running=toHide.size()===0?toShow.size():toHide.size();if(options.animated){if(!options.alwaysOpen&&clickedActive){$.ui.accordion.animations[options.animated]({toShow:jQuery([]),toHide:toHide,complete:complete,down:down,autoHeight:options.autoHeight});}else{$.ui.accordion.animations[options.animated]({toShow:toShow,toHide:toHide,complete:complete,down:down,autoHeight:options.autoHeight});}}else{if(!options.alwaysOpen&&clickedActive){toShow.toggle();}else{toHide.hide();toShow.show();}
complete(true);}}
function clickHandler(event){var options=$.data(this,"accordion").options;if(options.disabled){return false;}
if(!event.target&&!options.alwaysOpen){options.active.parent().andSelf().toggleClass(options.selectedClass);var toHide=options.active.next(),data={options:options,newHeader:jQuery([]),oldHeader:options.active,newContent:jQuery([]),oldContent:toHide},toShow=(options.active=$([]));toggle.call(this,toShow,toHide,data);return false;}
var clicked=$(event.target);if(clicked.parents(options.header).length){while(!clicked.is(options.header)){clicked=clicked.parent();}}
var clickedActive=clicked[0]==options.active[0];if(options.running||(options.alwaysOpen&&clickedActive)){return false;}
if(!clicked.is(options.header)){return;}
options.active.parent().andSelf().toggleClass(options.selectedClass);if(!clickedActive){clicked.parent().andSelf().addClass(options.selectedClass);}
var toShow=clicked.next(),toHide=options.active.next(),data={options:options,newHeader:clicked,oldHeader:options.active,newContent:toShow,oldContent:toHide},down=options.headers.index(options.active[0])>options.headers.index(clicked[0]);options.active=clickedActive?$([]):clicked;toggle.call(this,toShow,toHide,data,clickedActive,down);return false;};function findActive(headers,selector){return selector!=undefined?typeof selector=="number"?headers.filter(":eq("+selector+")"):headers.not(headers.not(selector)):selector===false?$([]):headers.filter(":eq(0)");}
$.extend($.ui.accordion,{defaults:{selectedClass:"selected",alwaysOpen:true,animated:'slide',event:"click",header:"a",autoHeight:true,running:0,navigationFilter:function(){return this.href.toLowerCase()==location.href.toLowerCase();}},animations:{slide:function(options,additions){options=$.extend({easing:"swing",duration:300},options,additions);if(!options.toHide.size()){options.toShow.animate({height:"show"},options);return;}
var hideHeight=options.toHide.height(),showHeight=options.toShow.height(),difference=showHeight/hideHeight;options.toShow.css({height:0,overflow:'hidden'}).show();options.toHide.filter(":hidden").each(options.complete).end().filter(":visible").animate({height:"hide"},{step:function(now){var current=(hideHeight-now)*difference;if($.browser.msie||$.browser.opera){current=Math.ceil(current);}
options.toShow.height(current);},duration:options.duration,easing:options.easing,complete:function(){if(!options.autoHeight){options.toShow.css("height","auto");}
options.complete();}});},bounceslide:function(options){this.slide(options,{easing:options.down?"bounceout":"swing",duration:options.down?1000:200});},easeslide:function(options){this.slide(options,{easing:"easeinout",duration:700});}}});$.fn.activate=function(index){return this.accordion("activate",index);};})(jQuery);