var initPage = function() {
  sfHover();
  var externals = $("a[href^='http:']");
}

var sfHover = function() {
	var mainMenuEl = document.getElementById("mainmenu");
	if(mainMenuEl) {
		var sfEls = mainMenuEl.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);