var accordion=
{
	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($)
		{
			accordion.urlparamselect(config.headerclass)
			var persistedheaders=accordion.getCookie(config.headerclass)
			accordion.contentclassname[config.headerclass]=config.contentclass
			config.cssclass={collapse: config.toggleclass[0], expand: config.toggleclass[1]}
			config.revealtype=/^(click)|(mouseover)$/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=accordion.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)
						$subcontent.show()
					accordion.expandit($(this), $subcontent, config, false)
					lastexpanded={$header:$(this), $content:$subcontent}
				}
				else
				{
					$subcontent.hide()
					config.onopenclose($(this).get(0), parseInt($(this).attr('headerindex')), $subcontent.css('display'), false)
					accordion.transformHeader($(this), config, "collapse")
				}
			})
			$('.'+config["headerclass"]).bind("evt_accordion", function()
					{
					var $subcontent=$subcontents.eq(parseInt($(this).attr('headerindex')))
					if ($subcontent.css('display')=="none")
					{
						accordion.expandit($(this), $subcontent, config, true)
						if (config["collapseprev"] && lastexpanded.$header && $(this).get(0)!=lastexpanded.$header.get(0))
						{
							accordion.collapseit(lastexpanded.$header, lastexpanded.$content, config, true)
						}
						lastexpanded={$header:$(this), $content:$subcontent}
					}
					else if (!config["onemustopen"] || config["onemustopen"] && lastexpanded.$header && $(this).get(0)!=lastexpanded.$header.get(0))
					{
						accordion.collapseit($(this), $subcontent, config, true)
					}
			})
			$('.'+config["headerclass"]).bind(config.revealtype, function()
			{
				if (config.revealtype=="mouseenter")
				{
					clearTimeout(config.revealdelay)
					var headerindex=parseInt($(this).attr("headerindex"))
					config.revealdelay=setTimeout(function(){accordion.expandone(config["headerclass"], headerindex)}, config.mouseoverdelay || 0)
				}
				else
				{
					$(this).trigger("evt_accordion")
					return false
				}
			})
			$('.'+config["headerclass"]).bind("mouseleave", function()
			{
				clearTimeout(config.revealdelay)
			})
			config.oninit($('.'+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)
				{
					expandedindices=(expandedindices.length==0)? '-1c' : expandedindices
					accordion.setCookie(config.headerclass, expandedindices)
				}
			})
		})
	}
}