addEvent(window, "load", makeTreesC);
function makeTreesC() {
// We don't actually need createElement, but we do
// need good DOM support, so this is a good check.
if (!document.createElement) return;
	uls = document.getElementsByTagName("ul");
	for (uli=0;uli<uls.length;uli++) {
		ul = uls[uli];
		if (ul.nodeName == "UL" && ul.className == "sitetree") {
			processULELC(ul);}
	}
}

function processULELC(ul) {
	if (!ul.childNodes || ul.childNodes.length == 0) return;
	// Iterate LIs
	for (var itemi=0;itemi<ul.childNodes.length;itemi++) {
		var item = ul.childNodes[itemi];
		if (item.nodeName == "LI") {
		// Iterate things in this LI
			var a;	
			var subul;
			subul = "";
			for (var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
				var sitem = item.childNodes[sitemi];
				switch (sitem.nodeName) {
					case "A": a = sitem;
					break;
					case "UL": subul = sitem;
					processULELC(subul);
					break;}
			}
			if (subul) {
				associateELC(a,subul);}
			else {
				a.parentNode.className = "treebullet";}
		}
	}
}

function associateELC(a,ul) {
	if (a.parentNode.className.indexOf('treeopen') == -1)
	a.parentNode.className = 'treeclosed';
	a.onclick = function () {
		this.parentNode.className = (this.parentNode.className=='treeopen') ? "treeclosed" : "treeopen";
		return false;}
}


/*              Utility functions                    */

function addEvent(obj, evType, fn){
/* adds an eventListener for browsers which support it
Written by Scott Andrew: nice one, Scott */
	if (obj.addEventListener){
	obj.addEventListener(evType, fn, false);
	return true;}
	else 	if (obj.attachEvent){
			var r = obj.attachEvent("on"+evType, fn);
			return r;}
		else {return false;}
}