/***********************************************
* 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
***********************************************/

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('.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");
    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 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

// Image rotation script added by Tim Benner

function randomimg() {
  var numpics = 29
  var i = Math.ceil(Math.random()*numpics)
  var t = document.getElementById("td1")
  t.style.backgroundImage = "url(images/toppic"+i+".jpg)"
}