/***********************************************
* Contractible Headers script- © Dynamic Drive (www.dynamicdrive.com)
* This notice must stay intact for legal use. Last updated Oct 21st, 2003.
* 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,isMenu,forceExpand){
	if (typeof ccollect!="undefined"){
		if(!isMenu){
			if(collapseprevious=="yes")
				contractcontent(cid);
			if(forceExpand)
				document.getElementById(cid).style.display = "block";
			else
				document.getElementById(cid).style.display = (document.getElementById(cid).style.display!="block")? "block" : "none";
		}
		else{
			contractcontent(cid);
			try{document.getElementById(cid).style.display = "block";}catch(e){}
		}
			
	}
}

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(){
getElementbyClass("switchcontent");
if (enablepersist=="on" && typeof ccollect!="undefined")
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;