function HiliteElement(elm_id,color)
    {
      elm = document.getElementById(elm_id);
      elm.style.backgroundColor = color;
      ch = elm.childNodes;
      for (i=0;i<ch.length;i++)
      {
        ch[i].style.backgroundColor = color;
      }
    }
    function UnHiliteElement(elm_id)
    {
      elm = document.getElementById(elm_id);
      elm.style.backgroundColor = "";
      for (i=0;i<ch.length;i++)
      {
        ch[i].style.backgroundColor = "";
      }
    }