/***********************************************
* Contractible Headers script- © Dynamic Drive (www.dynamicdrive.com)
* This notice must stay intact for use
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

var enablepersist="on" //Enable saving state of content structure? (on/off)

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

function getElementbyClass(classname){
  ccollect=new Array()
  var inc=0
  var alltags=document.all? document.all : document.getElementsByTagName("*")
  for (i=0; i<alltags.length; i++){
    if (alltags[i].className==classname)
    ccollect[inc++]=alltags[i]
  }
}

function contractcontent(omit){
  var inc=0
  while (ccollect[inc]){
    if (ccollect[inc].id!=omit)
    ccollect[inc].style.display="none"
    inc++
  }
}

function expandcontent(cid){
  if (typeof ccollect!="undefined"){
    contractcontent(cid)
    document.getElementById(cid).style.display=(document.getElementById(cid).style.display!="block")? "block" : "none"
    selectedItem=cid+"|"+document.getElementById(cid).style.display
  }
}

function revivecontent(){
  selectedItem=getselectedItem()
  selectedComponents=selectedItem.split("|")
  contractcontent(selectedComponents[0])
  document.getElementById(selectedComponents[0]).style.display=selectedComponents[1]
}

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 getselectedItem(){
  if (get_cookie(window.location.pathname) != ""){
    selectedItem=get_cookie(window.location.pathname)
    return selectedItem
  }
  else
    return ""
}

function saveswitchstate(){
  if (typeof selectedItem!="undefined")
    document.cookie=window.location.pathname+"="+selectedItem
}

function do_onload(){
  getElementbyClass("switchcontent")
if (enablepersist=="on" && getselectedItem()!="")
  revivecontent()
}


if (window.addEventListener)
  window.addEventListener("load", do_onload, false)
else if (window.attachEvent)
  window.attachEvent("onload", do_onload)
else if (document.getElementById)
  window.onload=do_onload

if (enablepersist=="on" && document.getElementById)
  window.onunload=saveswitchstate