sfHover = function()
{
    var sfEls = document.getElementById("ag_navigation").getElementsByTagName("li");
    for(var i=0; i<sfEls.length; i++)
    {
        sfEls[i].onmouseover=function() {
			this.className="sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className="";
		}
    }
}