function initNav()
{
	var nav = document.getElementById("nav");
	if(nav)
	{
		var lis = nav.getElementsByTagName("li");
		for (var i=0; i<lis.length; i++)
		{
			lis[i].onmouseover = function()
			{
				for (var j=0; j<lis.length; j++)
				{
					if(lis[j].className.indexOf("active") != -1)
						lis[j].className += " close";
				}
				this.className += " hover";
			}
			lis[i].onmouseout = function()
			{
				this.className = this.className.replace("hover", "");
				for (var j=0; j<lis.length; j++)
				{
					lis[j].className = lis[j].className.replace("close", "");
				}
			}
		}
	}
}
if (window.addEventListener)
	window.addEventListener("load", initNav, false);
else if (window.attachEvent)
	window.attachEvent("onload", initNav);