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);


function trim(stringToTrim) {
	    return stringToTrim.replace(/^\s+|\s+$/g,"");
}