var persistmenu="yes" //"yes" or "no". Make sure each SPAN content contains an incrementing ID starting at 1 (id="sub1", id="sub2", etc)

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

function SwitchMenu(obj){
	if(document.getElementById){
	var el = document.getElementById(obj);
	var ar = document.getElementById("masterdiv").getElementsByTagName("span"); //DynamicDrive.com change
		if(el.style.display != "block"){ //DynamicDrive.com change
      /*
			for (var i=0; i<ar.length; i++){
				if (ar[i].className=="submenu") //DynamicDrive.com change
				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(){
var inc = 1; var selected;
var cookiename= "switchmenu";
var cookievalue=get_cookie(cookiename);
if (cookievalue!="")
{
    selected =  cookievalue.toString().split("|");
    for (i=0;i<selected.length;i++) {
      if (selected[i]!="") {
        document.getElementById(selected[i]).style.display="block";
      }
    }
}
}

function savemenustate(){
var inc=1, blockid=""; var cookievalue="";
var cookiename = "switchmenu";
while (document.getElementById("sub"+inc)){
  if (document.getElementById("sub"+inc).style.display=="block"){
    blockid="sub"+inc
    cookievalue = cookievalue+"|"+blockid;
  }
  inc++
}
document.cookie = cookiename+"="+cookievalue+";path=/";
}

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