// force IE to recognize mouseovers on nav objects
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);