function getObj(block)
{
  if (document.getElementById) {
    return document.getElementById(block);
  } else if (document.all) {
    return document.all[block];
  } else if (document.layers) {
    return document.layers[block];
  } else {
    return false;
  }
}



function subMenuShowHide(obj)
{
  var subMenuId = obj.id + 'Contents';
  var subMenu = getObj(subMenuId);
  var hidden = subMenu.style.display == "none" ? 1 : 0;
  //subMenuHideAll();
  if (hidden) {
    subMenu.style.display = "block";
  } else {
    subMenu.style.display = "none";
  }
}