/***********************************************
* 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('.submenu{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