function expand(s)
{
  var td = s;
  td.className = "menuHover";
  
  var elements = td.getElementsByTagName("div");
  if (elements.length > 0) {
    d = elements.item(0);
    d.className = "menuHover";
  }
}

function collapse(s)
{
  var td = s;
  td.className = "menu";
  
  var elements = td.getElementsByTagName("div");
  if (elements.length > 0) {
    d = elements.item(0);
    d.className = "menu";
  }
}