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;