/***********************************************
 * 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