function initNav() {
		var navRoot = document.getElementById("navigation");
		if(navRoot)
		{
			var lis = navRoot.getElementsByTagName("li");
			for (var i=0; i<lis.length; i++)
			{
				var drops = lis[i].getElementsByTagName("ul");
				if (drops.length)
				{
					lis[i].onmouseover = function()
					{
						this.className += " hover";
					}
					lis[i].onmouseout = function()
					{
						this.className = this.className.replace("hover", "");
					}
				}
			}
		}
}

if (window.addEventListener){
	window.addEventListener("load", initNav, false);
}
else if (window.attachEvent){
	window.attachEvent("onload", initNav);
}