function initMenu() {
	var lists = document.getElementsByTagName('ul');
	for(var i=0; i<lists.length; i++) {
		if(lists[i].className!='menutree') continue;
		lists[i].onmouseover = navMouseOver;
		lists[i].onmouseout = navMouseOut;
		
		var listItems = lists[i].getElementsByTagName('li');
		for(var j=0; j<listItems.length; j++) {
		  var test = listItems[j].getElementsByTagName('ul')[0];
		  if(test) {
		  	listItems[j].firstChild.onfocus = navMouseOver;
		  	listItems[j].relatedItem = test;
		    if(listItems[j].className == 'active') {
		      listItems[j].isActive = true;
		    } else {
		      listItems[j].isActive = false;
		    }
		  }
		}
	}
}

var currentlyOpenedMenus = new Array();

function navMouseOver(e) {
	var evt = e || window.event;
	var evtTarget = evt.target || evt.srcElement;
	if(evtTarget.nodeName == 'UL') return;
	while(evtTarget.nodeName!='LI') {
		evtTarget = evtTarget.parentNode;
	}
	foldMenuIn(evtTarget);
	if(evtTarget.relatedItem && !evtTarget.relatedItem.opened) {
		evtTarget.className = 'selected';
		evtTarget.relatedItem.className = 'show';
		evtTarget.relatedItem.opened = true;
		currentlyOpenedMenus.push(evtTarget.relatedItem);
	}
}

function navMouseOut(e) {
	var evt = e || window.event;
	var relatedNode = evt.relatedTarget || evt.toElement;
	foldMenuIn(relatedNode);
} 

function foldMenuIn(targetNode) {
	if(!targetNode) return;
	var newCurrentlyOpenedMenus = new Array();
	for(var i=0; i<currentlyOpenedMenus.length; i++) {
		if(!containsElement(currentlyOpenedMenus[i], targetNode)) {
			currentlyOpenedMenus[i].className = '';
			if(currentlyOpenedMenus[i].parentNode.isActive) {
			  currentlyOpenedMenus[i].parentNode.className = 'active';
			} else {
			  currentlyOpenedMenus[i].parentNode.className = '';
			}
			
			currentlyOpenedMenus[i].opened = false;
		} else
			newCurrentlyOpenedMenus.push(currentlyOpenedMenus[i]);
	}
	currentlyOpenedMenus = newCurrentlyOpenedMenus;
}

function containsElement(obj1, obj2) {
	while(obj2.nodeName!='HTML') {
		if(obj2==obj1) return true;
		obj2=obj2.parentNode;
	}
	return false;
}

addEventSimple(window, "load", initMenu);

function addEventSimple(obj, evt, fn) {
	if(obj.addEventListener) {
		obj.addEventListener(evt, fn, false);
	} else if(obj.attachEvent) {
		obj.attachEvent('on'+evt, fn);
	}
}

function removeEventSimple(obj, evt, fn) {
	if(obj.removeEventListener) {
		obj.removeEventListener(evt, fn, false);
	} else if(obj.detachEvent) {
		obj.detachEvent('on'+evt, fn);
	}
}

/** PUSH AND SHIFT FOR IE5 **/

function Array_push() {
	var A_p = 0;
	for(A_p = 0; A_p<arguments.length; A_p++) {
		this[this.length] = arguments[A_p];
	}
	return this.length;
}

if(typeof Array.prototype.push == 'undefined') {
	Array.prototype.push == Array_push;
}

function Array_shift() {
	var A_s = 0;
	var response = this[0];
	for(A_s=0; A_s<this.length-1; A_s++) {
	  this[A_s] = this[A_s + 1];
	}
	this.length--;
	return response;
}

if(typeof Array.prototype.shift == 'undefined') {
	Array.prototype.shift = Array_shift;
}