function FensterOeffnen (Adresse, sollb, sollh) {
var br = screen.width;
var he = screen.height;
br=(br-sollb)/2;
he=(he-sollh)/2;
Fenster2 = window.open(Adresse, "kleinesfenster", "width="+sollb+",height="+sollh+",left="+br+",top="+he+",scrollbars=yes,resizable=no,menubar=no,statusbar=no,toolbar=no");
Fenster2.focus();
}