sfHover = function() {
	var sfEls = document.getObject("header_menu").getElementsByTagName("LI");
	if(sfEls){
		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"), "");
			}
		}
	}
}

function getObject(obj) {
  if(document.all) {
      return document.all(obj);
  }
  if(document.getElementById) {
      return document.getElementById(obj);
  }
  return null;
}

if (window.attachEvent) window.attachEvent("onload", sfHover);