sfHover = function()
		{
			var sfEls = document.getElementById("nav").getElementsByTagName("li");
			for (var i=0; i<sfEls.length; i++)
			{
				sfEls[i].onmouseover=function()
				{
					this.className+=" sfhover";
				}
				sfEls[i].onmouseout=function()
				{
					this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
				}
			}
		}
		if (window.attachEvent) window.attachEvent("onload", sfHover);