function oeffnefenster (url) {
 fenster=window.open(url, "photography", "width=975,height=715,toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=yes");
 fenster.focus();
}

function oeffnecontact (url) {
 fenster=window.open(url, "contact", "width=600,height=425,toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=yes");
 fenster.focus();
}