var a = a;

function popup(url, lang) {
    _baseUrl = 'http://wwww.poggenpohl.de';

    STF = window.open( _baseUrl + "/" + lang + "/send_to_friend.php?url=" + url , "Poggenpohl", "width=350,height=520,left=100,top=200,scrollbars=no,resizable=yes,status=no");
    STF.focus();
}