if (top.location != location) top.location.href = location.href;

canDo = false;
browserName = navigator.appName;
browserVer  = parseInt(navigator.appVersion);
has_loaded  = 0;

function load_images()
{
  if (browserName == "Netscape" && browserVer >= 3  || browserVer >= 4)
  {
     canDo = true;

     off     = new Image(168,17);
     off.src = "images/addoff.gif";

     on      = new Image(168,17);
     on.src  = "images/addon.gif";

     has_loaded = 1;
  }
  return true;
}// end of function load_images

function mouse_over()
{
  if (has_loaded == 1)
  {
    if (canDo == false) { return true; }
    document.mailImg.src = on.src;
  }
  return true;
} // end of function mouse_over

function mouse_out()
{
  if (has_loaded == 1)
  {
    if (canDo == false) { return true; }
    document.mailImg.src = off.src;
  }
  return true;
} // end of function mouse_over