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()
			{
				this.className += " hover";
				}
				lis[i].onmouseout = function()
				{
				this.className = this.className.replace(" hover", "");
			}
			}
		}
}
if (document.all && !window.opera) attachEvent("onload", initNav);