function showMap(url, w, h)
{
  window.open(
    url,
    "map",
    [
      "width="  + w,
      "height=" + h,
      "scrollbars=yes",
      "resizable=yes",
      "menubar=no",
      "toolbar=no",
      "location=no",
      "derectories=no",
      "status=yes"
    ]
  );
  
  return false;
}