function messageWindow(mypage, poplarge, pophaut) {
  var width = poplarge, height = pophaut;
  var left = (screen.width/2) - width/2;
  var top = (screen.height/2) - height/2;
winprops = 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbar=no,resizable=no,copyhistory=yes,width='+width+',height='+height+',left='+left+',top='+top+',screenX='+left+',screenY='+top;
window.open(mypage, 'Paysage', winprops);
}