function menufix() {
 var sfels = document.getelementbyid("nav1").getelementsbytagname("li");
 for (var i=0; i<sfels.length; i++) {
  sfels[i].onmouseover=function() {
  this.classname+=(this.classname.length>0? " ": "") + "sfhover";
  }
  sfels[i].onmousedown=function() {
  this.classname+=(this.classname.length>0? " ": "") + "sfhover";
  }
  sfels[i].onmouseup=function() {
  this.classname+=(this.classname.length>0? " ": "") + "sfhover";
  }
  sfels[i].onmouseout=function() {
  this.classname=this.classname.replace(new regexp("( ?|^)sfhover\\b"),

"");
  }
 }
}

if (document.all){

window.attachevent('onload',menufix)//ie��

}

else{

window.addeventlistener('load',menufix,false);//firefox

}