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