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

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

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

  td.className = "menuNormal";
  d.className = "menuNormal";
}
function subexpand(s)
{
  var td = s;
  var d = td.getElementsByTagName("div").item(0);

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

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

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

function highlight(s)
{
  var td = s;
  td.className = "menuHover";
}

function unhighlight(s)
{
  var td = s;
  td.className = "menuNormal";
}