//****************************************************
// File: menu.js  
//
// Purpose: Shows and hides a navigation menu.
//
// Written By: Chris Gentile
//****************************************************

window.onload = function() {

	// Get all ul elements in the the navigation
	var menus = document.getElementById("nav").getElementsByTagName("ul");
	
	for (i = 0; i < menus.length; i++)
	{
		menus[i].onmouseover = function() { this.style.visibility = "visible"; };
		menus[i].onmouseout = function() { this.style.visibility = "hidden"; };
		menus[i].parentNode.getElementsByTagName("a")[0].onmouseover = 
		function () { this.parentNode.getElementsByTagName("ul")[0].style.visibility = "visible"; };
		menus[i].parentNode.getElementsByTagName("a")[0].onmouseout = 
		function () { this.parentNode.getElementsByTagName("ul")[0].style.visibility = "hidden"; };
	}

}