var ddaccordion={
	
	contentclassname:{},

	expandone:function(headerclass, selected){
		this.toggleone(headerclass, selected, "expand")
	},

	collapseone:function(headerclass, selected){
		this.toggleone(headerclass, selected, "collapse")
	},

	expandall:function(headerclass){ 
		var $=jQuery
		var $headers=$('.'+headerclass)
		$('.'+this.contentclassname[headerclass]+':hidden').each(function(){
			$headers.eq(parseInt($(this).attr('contentindex'))).trigger("evt_accordion")
		})
	},

	collapseall:function(headerclass){ 
		var $=jQuery
		var $headers=$('.'+headerclass)
		$('.'+this.contentclassname[headerclass]+':visible').each(function(){
			$headers.eq(parseInt($(this).attr('contentindex'))).trigger("evt_accordion")
		})
	},

	toggleone:function(headerclass, selected, optstate){
		var $=jQuery
		var $targetHeader=$('.'+headerclass).eq(selected)
		var $subcontent=$('.'+this.contentclassname[headerclass]).eq(selected)
		if (typeof optstate=="undefined" || optstate=="expand" && $subcontent.is(":hidden") || optstate=="collapse" && $subcontent.is(":visible"))
			$targetHeader.trigger("evt_accordion")
	},

	expandit:function($targetHeader, $targetContent, config, useractivated){
		$targetContent.slideDown(config.animatespeed, function(){config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), useractivated)})
		this.transformHeader($targetHeader, config, "expand")
	},

	collapseit:function($targetHeader, $targetContent, config, isuseractivated){
		$targetContent.slideUp(config.animatespeed, function(){config.onopenclose($targetHeader.get(0), parseInt($targetHeader.attr('headerindex')), $targetContent.css('display'), isuseractivated)})
		this.transformHeader($targetHeader, config, "collapse")
	},

	transformHeader:function($targetHeader, config, state){
		$targetHeader.addClass((state=="expand")? config.cssclass.expand : config.cssclass.collapse) 
		.removeClass((state=="expand")? config.cssclass.collapse : config.cssclass.expand)
		if (config.htmlsetting.location=='src'){ 
			$targetHeader=($targetHeader.is("img"))? $targetHeader : $targetHeader.find('img').eq(0) 
			$targetHeader.attr('src', (state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse) 
		}
		else if (config.htmlsetting.location=="prefix")
			$targetHeader.find('.accordprefix').html((state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse)
		else if (config.htmlsetting.location=="suffix")
			$targetHeader.find('.accordsuffix').html((state=="expand")? config.htmlsetting.expand : config.htmlsetting.collapse)
	},

	urlparamselect:function(headerclass){
		var result=window.location.search.match(new RegExp(headerclass+"=((\\d+)(,(\\d+))*)", "i"))
		if (result!=null)
			result=RegExp.$1.split(',')
		return result 
	},

	getCookie:function(Name){ 
		var re=new RegExp(Name+"=[^;]+", "i") 
		if (document.cookie.match(re)) 
			return document.cookie.match(re)[0].split("=")[1]
		return null
	},

	setCookie:function(name, value){
		document.cookie = name + "=" + value + "; path=/"
	},

	init:function(config){
	document.write('<style type="text/css">\n')
	document.write('.'+config.contentclass+'{display: none}\n') //
	document.write('<\/style>')
	jQuery(document).ready(function($){
		ddaccordion.urlparamselect(config.headerclass)
		var persistedheaders=ddaccordion.getCookie(config.headerclass)
		ddaccordion.contentclassname[config.headerclass]=config.contentclass //
		config.cssclass={collapse: config.toggleclass[0], expand: config.toggleclass[1]} //
		config.revealtype=/^(click)|(mouseover)$/i.test(config.revealtype)? config.revealtype.replace(/mouseover/i, "mouseenter") : "click"
		config.htmlsetting={location: config.togglehtml[0], collapse: config.togglehtml[1], expand: config.togglehtml[2]} //
		config.oninit=(typeof config.oninit=="undefined")? function(){} : config.oninit //
		config.onopenclose=(typeof config.onopenclose=="undefined")? function(){} : config.onopenclose //
		var lastexpanded={} //
		var expandedindices=ddaccordion.urlparamselect(config.headerclass) || ((config.persiststate && persistedheaders!=null)? persistedheaders : config.defaultexpanded)
		if (typeof expandedindices=='string') //
			expandedindices=expandedindices.replace(/c/ig, '').split(',') //
		var $subcontents=$('.'+config["contentclass"])
		if (expandedindices.length==1 && expandedindices[0]=="-1") //
			expandedindices=[]
		if (config["collapseprev"] && expandedindices.length>1) //
			expandedindices=[expandedindices.pop()] //
		if (config["onemustopen"] && expandedindices.length==0) //
			expandedindices=[0]
		$('.'+config["headerclass"]).each(function(index){ //
			if (/(prefix)|(suffix)/i.test(config.htmlsetting.location) && $(this).html()!=""){ //
				$('<span class="accordprefix"></span>').prependTo(this)
				$('<span class="accordsuffix"></span>').appendTo(this)
			}
			$(this).attr('headerindex', index+'h') //
			$subcontents.eq(index).attr('contentindex', index+'c') //
			var $subcontent=$subcontents.eq(index)
			var needle=(typeof expandedindices[0]=="number")? index : index+'' //
			if (jQuery.inArray(needle, expandedindices)!=-1){ //
				if (config.animatedefault==false)
					$subcontent.show()
				ddaccordion.expandit($(this), $subcontent, config, false) //
				lastexpanded={$header:$(this), $content:$subcontent}
			}  //end check
			else{
				$subcontent.hide()
				config.onopenclose($(this).get(0), parseInt($(this).attr('headerindex')), $subcontent.css('display'), false) //
				ddaccordion.transformHeader($(this), config, "collapse")
			}
		})
		$('.'+config["headerclass"]).bind("evt_accordion", function(){ //
				var $subcontent=$subcontents.eq(parseInt($(this).attr('headerindex'))) //
				if ($subcontent.css('display')=="none"){
					ddaccordion.expandit($(this), $subcontent, config, true) //
					if (config["collapseprev"] && lastexpanded.$header && $(this).get(0)!=lastexpanded.$header.get(0)){ //
						ddaccordion.collapseit(lastexpanded.$header, lastexpanded.$content, config, true) //
					}
					lastexpanded={$header:$(this), $content:$subcontent}
				}
				else{
					ddaccordion.collapseit($(this), $subcontent, config, true) //
				}
 		})
		$('.'+config["headerclass"]).bind(config.revealtype, function(){
			if (config.revealtype=="mouseenter"){
				ddaccordion.expandone(config["headerclass"], parseInt($(this).attr("headerindex")))
			}
			else{
				$(this).trigger("evt_accordion")
				return false //cancel default click behavior
			}
		})
		config.oninit($('.'+config["headerclass"]).get(), expandedindices)
		$(window).bind('unload', function(){ //
			$('.'+config["headerclass"]).unbind()
			var expandedindices=[]
			$('.'+config["contentclass"]+":visible").each(function(index){ //
				expandedindices.push($(this).attr('contentindex'))
			})
			if (config.persiststate==true){ //persist state?
				expandedindices=(expandedindices.length==0)? '-1c' : expandedindices //
				ddaccordion.setCookie(config.headerclass, expandedindices)
			}
		})
	})
	}
}