<!--
// tpg post, posterijen, tpg, post, postbus, tpgpost, postcode, opta, diensten, nma, postcodes, produkten, dienstverlening, producten, amsterdam, adressen, informatie, adres, koninklijke, nederland, ptt, Koninklijke TPG Post BV, brieven
function mouseDown(e) {
 var shiftPressed=0;
 if (parseInt(navigator.appVersion)>3) {
  if (navigator.appName=="Netscape")
       shiftPressed=(e.modifiers-0>3);
  else shiftPressed=event.shiftKey;
  if (shiftPressed) {
   alert ('Error')
   return false;
  }
 }
 return true;
}
if (parseInt(navigator.appVersion)>3) {
 document.onmousedown = mouseDown;
 if (navigator.appName=="Netscape") 
  document.captureEvents(Event.MOUSEDOWN);
}
//-->