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 menuId = menu.attributes(0).value;
	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() {
//			currentMenu.style.visibility="hidden";
	}

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

	menu.hideMenu = function()  {
		if (!timerOn) {
			mytimer = setInterval("killMenu('" + this.id + "', '" + root.id + "');", 0500);
			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(menu, root) {
	var menu = document.getElementById(menu);
	var root = document.getElementById(root);
	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("menu_horizontal_list");
	//var root = document.getElementById("menu_vertical_list");
	if(root) 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);
			}
		}
	}
}