var currentMenu = null;
var mytimer = null;
var timerOn = false;
var opera = window.opera ? true : false;

if (!document.getElementById)
	document.getElementById = function() { return null; }
	
function initialiseMenu(menu, starter, root) {
	var leftstarter = false;
	if (menu == null || starter == null) return;
	currentMenu = menu;
	starter.onmouseover = function() {
	if (currentMenu) {
		if (this.parentNode.parentNode!=currentMenu) {
			currentMenu.style.visibility = "hidden";
		}
		if (this.parentNode.parentNode==root) {
			tempCurrentMenu = currentMenu
			while (tempCurrentMenu.parentNode.parentNode!=root) {
				tempCurrentMenu.parentNode.parentNode.style.visibility = "hidden";
				tempCurrentMenu = tempCurrentMenu.parentNode.parentNode;
			}
		}
		currentMenu = null;
		this.showMenu();
	}
}

menu.onmouseover = function() {
	if (currentMenu) {
		currentMenu = null;
		this.showMenu();
	}
}	
	
starter.showMenu = function() {
	if (!opera) {
		if (this.parentNode.parentNode==root) {
			menu.style.left = this.offsetLeft + "px";
			menu.style.top = this.offsetTop + this.offsetHeight + "px";
		}
		else {
		 	menu.style.left = this.offsetLeft + this.offsetWidth + "px";
		 	menu.style.top = this.offsetTop + "px";
		}
	}
	else {
		if (this.parentNode.parentNode==root) {
			menu.style.left = this.offsetLeft + "px";
			menu.style.top = this.offsetHeight + "px";
		}
		else {
		 	menu.style.left = this.offsetWidth + "px";
		 	menu.style.top = this.offsetTop + "px";
		}

	}
	menu.style.visibility = "visible";
	currentMenu = menu;
}

starter.onfocus	 = function() {
	starter.onmouseover();
}

menu.onfocus	 = function() {
}

menu.showMenu = function() {
	menu.style.visibility = "visible";
	currentMenu = menu;
	stopTime();
}

menu.hideMenu = function()  {
	if (!timerOn) {
		mytimer = setInterval("killMenu('" + this.id + "', '" + root.id + "');", 2000);
		timerOn = true;
		for (var x=0;x<menu.childNodes.length;x++) {
			if (menu.childNodes[x].nodeName=="LI") {
				if (menu.childNodes[x].getElementsByTagName("UL").length>0) {
					menuItem = menu.childNodes[x].getElementsByTagName("UL").item(0);
					menuItem.style.visibility = "hidden";
				}
			}
		}
	}
}

menu.onmouseout = function(event) {
	this.hideMenu();
}

starter.onmouseout = function() {
	for (var x=0;x<menu.childNodes.length;x++) {
		if (menu.childNodes[x].nodeName=="LI") {
			if (menu.childNodes[x].getElementsByTagName("UL").length>0) {
				menuItem = menu.childNodes[x].getElementsByTagName("UL").item(0);
				menuItem.style.visibility = "hidden";
			}
		}
	}
	menu.style.visibility = "hidden";
}
}

function killMenu(amenu, aroot) {
	var menu = document.getElementById(amenu);
	var root = document.getElementById(aroot);
	menu.style.visibility = "hidden";
	for (var x=0;x<menu.childNodes.length;x++) {
		if (menu.childNodes[x].nodeName=="LI") {
			if (menu.childNodes[x].getElementsByTagName("UL").length>0) {
				menuItem = menu.childNodes[x].getElementsByTagName("UL").item(0);
				menuItem.style.visibility = "hidden";
			}
		}
	}
	while (menu.parentNode.parentNode!=root) {
		menu.parentNode.parentNode.style.visibility = "hidden";
		menu = menu.parentNode.parentNode;
	}
	stopTime();
}

function stopTime() {
	if (mytimer) {
	 	 clearInterval(mytimer);
		 mytimer = null;
		 timerOn = false;
	}
} 

window.onload = function() {
	var root = document.getElementById("menuList");
	getMenus(root, root);
}

function getMenus(elementItem, root) {
	var selectedItem;
	var menuStarter;
	var menuItem;
	for (var x=0;x<elementItem.childNodes.length;x++) {
		if (elementItem.childNodes[x].nodeName=="LI") {
			if (elementItem.childNodes[x].getElementsByTagName("UL").length>0) {
				menuStarter = elementItem.childNodes[x].getElementsByTagName("A").item(0);
				menuItem = elementItem.childNodes[x].getElementsByTagName("UL").item(0);
				getMenus(menuItem, root);
				initialiseMenu(menuItem, menuStarter, root);
			}
		}
	}
}