/***********************************************
* Switch Menu script- by Martial B of http://getElementById.com/
* Modified by Dynamic Drive for format & NS4/IE4 compatibility
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

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

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

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() {
  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