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("ToSch - Web");
      return false;
      }
  return true;
  }

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