/***********************************************
	* Switch Content script II- © Dynamic Drive (www.dynamicdrive.com)
	* This notice must stay intact for legal use. Last updated April 2nd, 2005.
	* Visit http://www.dynamicdrive.com/ for full source code
	***********************************************/
	
	var enablepersist="on" //Enable saving state of content structure using session cookies? (on/off)
	var memoryduration="7" //persistence in # of days
	
	var contractsymbol='images/system/minus.gif' //Path to image to represent contract state.
	var expandsymbol='images/system/plus.gif' //Path to image to represent expand state.
	
	/////No need to edit beyond here //////////////////////////
	
	function getElementbyClass(rootobj, classname){
		var temparray=new Array()
		var inc=0
		var rootlength=rootobj.length
		for (i=0; i<rootlength; i++){
		if (rootobj[i].className==classname)
			temparray[inc++]=rootobj[i]
		}
		return temparray
	}
	
	function sweeptoggle(ec){
		var inc=0
		while (ccollect[inc]){
			ccollect[inc].style.display=(ec=="contract")? "none" : ""
			inc++
		}
		revivestatus()
	}
	
	
	function expandcontent(curobj, cid){
		if (ccollect.length>0){
			document.getElementById(cid).style.display=(document.getElementById(cid).style.display!="none")? "none" : ""
			curobj.src=(document.getElementById(cid).style.display=="none")? expandsymbol : contractsymbol
		}
	}
	
	function revivecontent(){
		selectedItem=getselectedItem()
		selectedComponents=selectedItem.split("|")
		for (i=0; i<selectedComponents.length-1; i++)
		document.getElementById(selectedComponents[i]).style.display="none"
	}
	
	function revivestatus(){
		var inc=0
		while (statecollect[inc]){
		if (ccollect[inc].style.display=="none")
			statecollect[inc].src=expandsymbol
		else
			statecollect[inc].src=contractsymbol
			inc++
		}
	}
	
	function get_cookie(Name) { 
		var search = Name + "="
		var returnvalue = "";
		if (document.cookie.length > 0) {
			offset = document.cookie.indexOf(search)
		if (offset != -1) { 
			offset += search.length
			end = document.cookie.indexOf(";", offset);
		if (end == -1) end = document.cookie.length;
			returnvalue=unescape(document.cookie.substring(offset, end))
		}
		}
		return returnvalue;
	}
	
	function getselectedItem(){
		if (get_cookie(window.location.pathname) != ""){
			selectedItem=get_cookie(window.location.pathname)
			return selectedItem
		}
		else
			return ""
	}
	
	function saveswitchstate(){
		var inc=0, selectedItem=""
		while (ccollect[inc]){
			if (ccollect[inc].style.display=="none")
				selectedItem+=ccollect[inc].id+"|"
				inc++
			}
			if (get_cookie(window.location.pathname)!=selectedItem){ //only update cookie if current states differ from cookie's
				var expireDate = new Date()
				expireDate.setDate(expireDate.getDate()+parseInt(memoryduration))
				document.cookie = window.location.pathname+"="+selectedItem+";path=/;expires=" + expireDate.toGMTString()
		}
	}
	
	function do_onload(){
		uniqueidn=window.location.pathname+"firsttimeload"
		var alltags=document.all? document.all : document.getElementsByTagName("*")
		ccollect=getElementbyClass(alltags, "switchcontent")
		statecollect=getElementbyClass(alltags, "showstate")
		if (enablepersist=="on" && get_cookie(window.location.pathname)!="" && ccollect.length>0)
			revivecontent()
		if (ccollect.length>0 && statecollect.length>0)
			revivestatus()
	}
	
	if (window.addEventListener)
		window.addEventListener("load", do_onload, false)
	else if (window.attachEvent)
		window.attachEvent("onload", do_onload)
	else if (document.getElementById)
		window.onload=do_onload
	
	if (enablepersist=="on" && document.getElementById)
		window.onunload=saveswitchstate