function setupMenu()
{
  var menu=document.getElementById("menulist");
  if (menu)
  {
    var menuitems=menu.getElementsByTagName('li');
    if(menuitems)
    {
      for(var i=0;i<menuitems.length;i++)
      {
        // assign over/out function to menu list items
        menuitems[i].onmouseover=function(){this.className+=" over";}
        menuitems[i].onmouseout=function(){this.className=this.className.replace(" over", "");}
      }
    }
  } 
}