function swap_html(id_show, id_hide)
{
  if (document.getElementById)
  {
    if (id_show != "")
    {
      if (document.getElementById(id_show).style.display != "inline")
        document.getElementById(id_show).style.display = "inline";
      else
        document.getElementById(id_show).style.display = "none";
    }

    if (id_hide != "")
    {
      if (document.getElementById(id_hide).style.display == "inline")
        document.getElementById(id_hide).style.display = "none";
    }

    return;
  }

  if (document.all)
  {
    if (id_show != "")
    {
      if (document.all[id_show].style.display != "inline")
        document.all[id_show].style.display="inline";
      else
        document.all[id_show].style.display="none";
    }

    if (id_hide != "")
    {
      if (document.all[id_hide].style.display == "inline")
        document.all[id_hide].style.display = "none";
    }

    return;
  }

  if (document.layers)
  {
    if (id_show != "")
    {
      if (document.layers[id_show].display != "inline")
        document.layers[id_show].display = "inline";
      else
        document.layers[id_show].display = "none";
    }

    if (id_hide != "")
    {
      if (document.layers[id_hide].display == "inline")
        document.layers[id_hide].display = "none";
    }

    return;
  }
}