/***********************************************
* 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;