function show_pointer(item, bool)
{
  tag = this.document.getElementById('menu_' + item);

  if (tag)
  {
    if (bool)
    {
      tag.style.backgroundImage = "url('images/layout/menu_pointer.jpg')";
      tag.style.backgroundRepeat = "no-repeat";
      tag.style.backgroundPosition = "center top";
    }
	else
    {
      tag.style.backgroundImage = "none";
	}
  }
}