function menu(div) {
	numDivs = 20
	/*for (i=1; i<=numDivs; i++)
		document.getElementById("div"+i).style.display = "none";*/
	
	if (document.getElementById(div).style.display == "none") {
		document.getElementById(div).style.display= "block";
	} else {
	  document.getElementById(div).style.display = "none";
	}
}



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="local" //enter "sitewide" for menu to persist across site, "local" for this page only

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("div"+inc)){
		if (document.getElementById("div"+inc).style.display=="block"){
			blockid="div"+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