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

if (document.getElementById){
    document.write('<style type="text/css">\n')
    document.write('.ntSubMenu{display: none;}\n')
    document.write('</style>\n')
}

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

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