function right(e)
{
   if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2))
      return false;
   else
   if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2 || event.button == 3))
      {
      alert("Hast Du einen Krampf in deinem rechten Mittelfinger ???");
      alert("Du kommst hier nicht mehr raus ... Hihihi!");
      alert("Protection by JOLLY Internetsecurity!");
      return false;
      }
   return true;
}

document.onmousedown=right;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
window.onmousedown=right;