function openAGB (url) {
 fenster = window.open(url, "AGB", "width=600,height=400,status=no,scrollbars=no,resizable=no");
 fenster.focus();
}
function openImpressum (url) {
 fenster = window.open(url, "Impressum", "width=600,height=400,status=no,scrollbars=no,resizable=no");
 fenster.focus();
}