/***********************************************
* Switch Content script- © Dynamic Drive (www.dynamicdrive.com)
* This notice must stay intact for legal use. Last updated April 2nd, 2005.
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

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

var contractsymbol='[&nbsp;-&nbsp;]&nbsp;' //HTML for contract symbol. For image, use: <img src="whatever.gif">
var expandsymbol='[&nbsp;+&nbsp;]&nbsp;' //HTML for expand symbol.


if (document.getElementById){

try 
{
	displayState = startDisplayWindow;
}
catch(e)
{
	displayState = 'none';
}

document.write('<style type="text/css">');
document.write('.switchcontent{display:' + displayState + ';}');
document.write('</style>');
}

function getElementbyClass(rootobj, classname){
	var temparray=new Array();
	var inc=0;
	var rootlength=rootobj.length;
	for (i=0; i<rootlength; i++){
		if (rootobj[i].className==classname)
			temparray[inc++]=rootobj[i];
	}
	return temparray
}

function sweeptoggle(ec){
	var thestate=(ec=="expand")? "block" : "none";
	var inc=0;
	while (ccollect[inc]){
		ccollect[inc].style.display=thestate;
		inc++;
	}
	revivestatus();
}

function contractcontent(omit){
	var inc=0;
	while (ccollect[inc]){
		if (ccollect[inc].id!=omit)
			ccollect[inc].style.display="none";
		inc++;
	}
}

function adjustall(dir){
	var inc=0
	while (ccollect[inc]){
		if (dir == 0)
		{
			ccollect[inc].style.display="none";
			statecollect[inc].innerHTML=expandsymbol;
		}
		else
		{
			ccollect[inc].style.display="block";
			statecollect[inc].innerHTML=contractsymbol;
		}
		inc++
	}
}

function expandcontent(curobj, cid)
{
	var spantags=curobj.getElementsByTagName("SPAN");
	var showstateobj=getElementbyClass(spantags, "showstate");
	
	if (ccollect.length>0)
	{
		if (collapseprevious=="yes")
			contractcontent(cid);
		document.getElementById(cid).style.display=(document.getElementById(cid).style.display=="block"||document.getElementById(cid).style.display=="")? "none" : "block";
		if (showstateobj.length>0){ //if "showstate" span exists in header
			if (collapseprevious=="no")
				showstateobj[0].innerHTML=(document.getElementById(cid).style.display=="block")? contractsymbol : expandsymbol;
			else
				revivestatus();
		}
	}
}

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 revivestatus(){
	var inc=0
	while (statecollect[inc]){
		if (ccollect[inc].style.display=="block")
			statecollect[inc].innerHTML=contractsymbol;
		else
			statecollect[inc].innerHTML=expandsymbol;
		inc++;
	}
}

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";
	var alltags=document.all? document.all : document.getElementsByTagName("*");
	ccollect=getElementbyClass(alltags, "switchcontent");
	statecollect=getElementbyClass(alltags, "showstate");
	if (enablepersist=="on" && ccollect.length>0)
	{
		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 (ccollect.length>0 && statecollect.length>0)
	{
		try
		{
			revivestatus();
		}
		catch(e)
		{
		}
	}
}

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;