function popup (url) {
 fenster = window.open(url, "Popup", "width=400,height=397,status=yes,scrollbars=yes,resizable=no");
 fenster.focus();
}

function popup2 (url) {
 fenster = window.open(url, "Popup", "width=350,height=250,status=yes,scrollbars=yes,resizable=no");
 fenster.focus();
}

function popup3 (url) {
 fenster = window.open(url, "Popup", "width=420,height=397,status=yes,scrollbars=yes,resizable=no");
 fenster.focus();
}