function sfHover() {
  	var sfEls = document.getElementById("navi").getElementsByTagName("LI");
  	for (var i=0; i<sfEls.length; i++) {
  		sfEls[i].onmouseover=function() {
  			this.className+="hover";
  		}
  		sfEls[i].onmouseout=function() {
  			this.className=this.className.replace(new RegExp("hover\\b"), "");
  		}
  	}
  }

function enableDropdownMenuForIE(){
  if (window.attachEvent) window.attachEvent("onload", sfHover);
}

function dom_check(url, location)
{
   new Ajax.Updater(location, url, {method: 'get'});
}