function openpopup(url,name,x,y)
{
    var prop
    var popup

    prop = "resizable=no,scrollbars=no,status=no,width=" + (x) + ",height=" + (y);
    popup = window.open(url,name,prop);

    return popup;
}


window.onload = function(){
  popup = new PopUp();
  popup.addType({
    name: "buchung",
    width: 800,
    height: 500,
    resizable: true,
    scrollbars: true,
    title: "Die Buchungsanfrage öffnet sich in einem neuen Fenster."
  });
  popup.apply();
}