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

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

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

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