function expand(s)
{
  var td = s;
  var cname;
  var d = td.getElementsByTagName("div").item(0);
  var cname = td.className;

  var no = cname.substr(cname.length-1);
  var clname = "menuHover"+no;

  td.className = clname;
  d.className = clname;
}

function collapse(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);
  var cname = td.className;

  var no = cname.substr(cname.length-1);
  var clname = "menuNormal"+no;

  td.className = clname;
  d.className = clname;
}