// JavaScript Document
sfHover = function() {
   var sfEls = document.getElementById("headernavi").getElementsByTagName("li");
   for (var i=0; i<sfEls.length; i++) {
         sfEls[i].onmouseover=function() {
             this.className+=" over";
         }
         sfEls[i].onmouseout=function() {
             this.className=this.className.replace(" over", "");
         }
   }
}
if (window.attachEvent) window.attachEvent("onload", sfHover);