var a = document.all;
var e = navigator.userAgent.search(/Opera/);
var f = navigator.userAgent.search(/MSIE 7./);


sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
//IE 7.0:
		if((f>0 && sfEls[i].className=="plus")||f<0){
			sfEls[i].onmouseover=function() {
				this.className+=" sfhover";
			}
			sfEls[i].onmouseout=function() {
				this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
			}
//IE 7.0:
		}
	}
}

if ((e<0) && window.attachEvent) window.attachEvent("onload", sfHover);