addEvent(window,"load",convertTrees);

function addEvent(o,e,f) {
	if(o.addEventListener) {
		o.addEventListener(e,f,true);
		return true;
	}
	else if(o.attachEvent) {
		return o.attachEvent("on"+e,f);
	}
	else {
		return false;
	}
}
	
function setDefault(name,val) {
	if(typeof(window[name])=="undefined" || window[name]==null) {
		window[name]=val;
	}
}

function expandTree(treeId) {
	var ul = document.getElementById(treeId);
	if(ul == null){return false;}expandCollapseList(ul,nodeOpenClass);
}

function collapseTree(treeId) {
	var ul = document.getElementById(treeId);
	if(ul == null){return false;}expandCollapseList(ul,nodeClosedClass);
}

function expandToItem(treeId,itemId) {
	var ul = document.getElementById(treeId);
	if(ul == null) {
		return false;
	}
	var ret = expandCollapseList(ul,nodeOpenClass,itemId);
	if(ret) {
		var o = document.getElementById(itemId);
		if(o.scrollIntoView){o.scrollIntoView(false);
	}
}
}

function expandCollapseList(ul,cName,itemId) {
	if(!ul.childNodes || ul.childNodes.length==0) {
		return false;
	}
	for(var itemi=0;itemi<ul.childNodes.length;itemi++) {
		var item = ul.childNodes[itemi];
		if(itemId!=null && item.id==itemId){return true;
	}if(item.nodeName == "LI") {
		var subLists = false;for(var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
			var sitem = item.childNodes[sitemi];
			if(sitem.nodeName=="UL") {
				subLists = true;
				var ret = expandCollapseList(sitem,cName,itemId);
				if(itemId!=null && ret) {
					item.className=cName;return true;
				}
			}
		}
		if(subLists && itemId==null) {
			item.className = cName;
		}
	}
}}

function convertTrees() {
	setDefault("treeClass","siteMap");
	setDefault("nodeClosedClass","liClosed");
	setDefault("nodeOpenClass","liOpen");
	setDefault("nodeBulletClass","liBullet");
	setDefault("nodeLinkClass","bullet");
	setDefault("preProcessTrees",true);
	if(preProcessTrees) {
		if(!document.createElement){return;
	}
	uls = document.getElementsByTagName("ul");
	for(var uli=0;uli<uls.length;uli++) {
		var ul=uls[uli];
		if(ul.nodeName=="UL" && ul.className==treeClass) {
			processList(ul);
		}
	}
	}
}

function processList(ul) {
	if(!ul.childNodes || ul.childNodes.length==0) {
		return;
	}
	for(var itemi=0;itemi<ul.childNodes.length;itemi++) {
		var item = ul.childNodes[itemi];
		if(item.nodeName == "LI") {
			var subLists = false;
			for(var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
				var sitem = item.childNodes[sitemi];
				if(sitem.nodeName=="UL") {
					subLists = true;processList(sitem); 
				}
			}
			var s= document.createElement("SPAN");
			var t= '\u00A0'; s.className = nodeLinkClass;
			if(subLists) {
				if(item.className==null || item.className=="") {
					item.className = nodeClosedClass;
				}
				if(item.firstChild.nodeName=="#text") {
					t = t+item.firstChild.nodeValue;
					item.removeChild(item.firstChild);
				}
				s.onclick = function() {
					this.parentNode.className =(this.parentNode.className==nodeOpenClass) ? nodeClosedClass : nodeOpenClass;return false;
				}
			}
			else {
				item.className = nodeBulletClass;s.onclick = function() {
					return false;
				}
			}
			s.appendChild(document.createTextNode(t));
			item.insertBefore(s,item.firstChild);
		}
	}
}