// JavaScript Document


var head = "display:''"
var ns6 = document.getElementById && !document.all
var ie4 = document.all && navigator.userAgent.indexOf("Opera") == -1
function checkcontained(e){
	var iscontained=0
    cur = ns6 ? e.target : event.srcElement
    i = 0
    if (cur.id == "heading"){
        iscontained = 1
    }else
        while(ns6 && cur.parentNode || (ie4 && cur.parentElement)){
            if (cur.id == "heading" || cur.id == "listing"){
                iscontained = (cur.id == "heading") ? 1 : 0
                 break
            }
            cur = ns6 ? cur.parentNode : cur.parentElement
        }
   	 	if (iscontained){
			var foldercontent = ns6 ? cur.nextSibling.nextSibling : cur.all.tags("UL")[0]
			if (foldercontent.style.display == "none"){
				foldercontent.style.display = ""
			}else{
				foldercontent.style.display = "none"
			}
    	}
}
if (ie4 || ns6)
    document.onclick = checkcontained