sfHover = function() {
	var sfEls = document.getElementById("navi").getElementsByTagName("li");
	
	if (sfEls.length>0) {
    for (var i=0; i<sfEls.length; i++) {
  		sfEls[i].onmouseover=function() {
  		  
  			this.className+=" sfhover";
  			// alert (this.className);
  		}
  		sfEls[i].onmouseout=function() {
  			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
  		}
  	}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);