/***********************************************
* Contractible Headers script- © Dynamic Drive (www.dynamicdrive.com)
* This notice must stay intact for legal use. Last updated Mar 23rd, 2004.
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

var enablepersist="on" //Enable saving state of content structure using session cookies? (on/off)
var collapseprevious="no" //Collapse previously open content when opening present? (yes/no)

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"){
      if (collapseprevious=="yes")
      contractcontent(cid)
      document.getElementById(cid).style.display=(document.getElementById(cid).style.display!="block")? "block" : "none"
   }
}

function revivecontent(){
   contractcontent("omitnothing")
   selectedItem=getselectedItem()
   selectedComponents=selectedItem.split("|")
   for (i=0; i<selectedComponents.length-1; i++)
   document.getElementById(selectedComponents[i]).style.display="block"
}

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(){
   var inc=0, selectedItem=""
   while (ccollect[inc]){
      if (ccollect[inc].style.display=="block")
      selectedItem+=ccollect[inc].id+"|"
      inc++
   }

   document.cookie=window.location.pathname+"="+selectedItem
}

function do_onload(){
   uniqueidn=window.location.pathname+"firsttimeload"
   getElementbyClass("switchcontent")
   if (enablepersist=="on" && typeof ccollect!="undefined"){
      document.cookie=(get_cookie(uniqueidn)=="")? uniqueidn+"=1" : uniqueidn+"=0"
      firsttimeload=(get_cookie(uniqueidn)==1)? 1 : 0 //check if this is 1st page load
      if (!firsttimeload)
      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