function theatre (videonummer, breite, hoehe)
{
  wbreite = breite+0;
  whoehe = hoehe+200;
  theatreWindow = window.open("theatre.php?nr="+videonummer+"&breite="+breite+"&hoehe="+hoehe, "theatre", "width="+wbreite+", height="+whoehe+", menubar=no, toolbar=no, statusbar=no, status=no, resizable=yes");
  theatreWindow.focus();
}