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

  td.className = "bottomHover";
  d.className = "bottomHover";
}

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

  td.className = "bottomNormal";
  d.className = "bottomNormal";
}