var enablepersist="off" //Enable saving state of content structure using session cookies? (on/off)
	var collapseprevious="yes" //Collapse previously open content when opening present? (yes/no)
	
	if (document.getElementById){
		document.write('<style type="text/css">')
		document.write('.switchcontent{display:none;}')
		document.write('</style>')
	}
	
	function getElementbyClass(classname){
		ccollect=new Array()
		var inc=0
		var alltags=document.all? document.all : document.getElementsByTagName("*")
		for (i=0; i<alltags.length; i++){
			if (alltags[i].className==classname)
				ccollect[inc++]=alltags[i]
		}
	}
	
	function contractcontent(omit){
		var inc=0
		while (ccollect[inc]){
			if (ccollect[inc].id!=omit){
				if (ccollect[inc].id.substring(0, 2)==omit.substring(0, 2)){ // deze lijn toegevoegd om binnen niveau te blijven (id niveau's = sc1, sc2, sc3, niv1, niv2, niv3, ...)
					ccollect[inc].style.display="none"
				}
			}
			inc++
		}
	}
	
	function expandcontent(cid){
		if (typeof ccollect!="undefined"){
			if (collapseprevious=="yes")
				contractcontent(cid)
			document.getElementById(cid).style.display=(document.getElementById(cid).style.display!="block")? "block" : "none"
		}
	}
	
	function revivecontent(){
		contractcontent("omitnothing")
		selectedItem=getselectedItem()
		selectedComponents=selectedItem.split("|")
		for (i=0; i<selectedComponents.length-1; i++)
			document.getElementById(selectedComponents[i]).style.display="block"
	}
	
	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=="block")
			selectedItem+=ccollect[inc].id+"|"
			inc++
		}
		
		document.cookie=window.location.pathname+"="+selectedItem
	}
	
	function do_onload(){
		uniqueidn=window.location.pathname+"firsttimeload"
		getElementbyClass("switchcontent")
		if (enablepersist=="on" && typeof ccollect!="undefined"){
			document.cookie=(get_cookie(uniqueidn)=="")? uniqueidn+"=1" : uniqueidn+"=0" 
			firsttimeload=(get_cookie(uniqueidn)==1)? 1 : 0 //check if this is 1st page load
			if (!firsttimeload)
			revivecontent()
		}
	}
	
	
	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