function initPage()
{
	var nav = document.getElementById("menu");
	if (nav)
	{
		var nodes = nav.getElementsByTagName("li");
		for (var i = 0; i < nodes.length; i++)
		{		
				nodes[i].onclick = function () 
				{
					if (this.className.indexOf("active") != -1)
						this.className = this.className.replace("active", "");
					else 
						this.className += " active";
				}
		}
	}
}

if (window.addEventListener)
	window.addEventListener("load", initPage, false);
else if (window.attachEvent)
	window.attachEvent("onload", initPage);