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