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='<img src="/images/dot_menu_vermelho.gif">' //HTML for contract symbol. For image, use: <img src="whatever.gif">
var expandsymbol='<img src="/images/dot_menu_vermelho.gif">' //HTML for expand symbol.


if (document.getElementById)
{
	document.write('<style type="text/css">')
	document.write('.switchcontent{display:none;}')
	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 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")? "block" : "none"
		
		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)
		revivestatus()
	}

	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