//Smart Folding Menu tree- By Dynamic Drive (rewritten 03/03/02)
//For full source code and more DHTML scripts, visit 

var strNav = navigator.userAgent
var head="display:''"
img1=new Image()
img1.src="/pictures/right_array.gif"
img2=new Image()
img2.src="/pictures/bottom_array.gif"
img3=new Image()
img3.src="/pictures/red_right_array.gif"
img4=new Image()
img4.src="/pictures/point.gif"

function checkcontained(e){
var foldercontent
var iscontained=0
cur=ns6? e.target : event.srcElement
i=0
if (cur.id=="foldheader")
iscontained=1
else
while (ns6&&cur.parentNode||(ie4&&cur.parentElement)){
if (cur.id=="foldheader"||cur.id=="foldinglist"){
iscontained=(cur.id=="foldheader")? 1 : 0
break
}
cur=ns6? cur.parentNode : cur.parentElement
}

if (iscontained){
	if (strNav.indexOf("Mac")!=-1&&strNav.indexOf("MSIE 5")!=-1) {
		foldercontent = cur.nextSibling
	}else{
		foldercontent=ns6? cur.nextSibling : cur.all.tags("UL")[0]
	}
	if (foldercontent.style.display=="none"){
		cur.style.listStyleImage="url(/pictures/bottom_array.gif)"
		foldercontent.style.display=""
	}else{
		cur.style.listStyleImage="url(/pictures/right_array.gif)"
		foldercontent.style.display="none"
	}
	
}
}

if (ie4||ns6)
document.onclick=checkcontained