var persistmenu="yes" //"yes" or "no". Make sure each SPAN content contains an incrementing ID starting at 1 (id="sub1", id="sub2", etc)
var persisttype="sitewide" //enter "sitewide" for menu to persist across site, "local" for this page only


function displayMenu(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
    var ar = document.getElementById("masterdiv").getElementsByTagName("span"); 
		if(el.style.display != "block"){ 
			for (var i=0; i<ar.length; i++){
				if (ar[i].className=="submenu") 
				ar[i].style.display = "none";
			}
			el.style.display = "block";
		}else{
			el.style.display = "none";
		}
	}
}

function hideMenu(){
    var ar = document.getElementById("masterdiv").getElementsByTagName("span"); 
	for (var i=0; i<ar.length; i++){
		if (ar[i].className=="submenu") 
			ar[i].style.display = "none";
	}
	return false;
}



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 onloadfunction(){
if (persistmenu=="yes"){
var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
var cookievalue=get_cookie(cookiename)
if (cookievalue!="")
document.getElementById(cookievalue).style.display="block"
}
}

function savemenustate(){
var inc=1, blockid=""
while (document.getElementById("sub"+inc)){
if (document.getElementById("sub"+inc).style.display=="block"){
blockid="sub"+inc
break
}
inc++
}
var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
var cookievalue=(persisttype=="sitewide")? blockid+";path=/" : blockid
document.cookie=cookiename+"="+cookievalue
}

if (window.addEventListener)
window.addEventListener("load", onloadfunction, false)
else if (window.attachEvent)
window.attachEvent("onload", onloadfunction)
else if (document.getElementById)
window.onload=onloadfunction

if (persistmenu=="yes" && document.getElementById)
window.onunload=savemenustate