function openRueckruf(BASEDIR) {
  window.open("" + BASEDIR + "/rueckruf-service", "leinwandtaxi", "menubar=no,scrollbars=no,toolbar=no,height=550,width=450");
}
function openLizenzInfo(BASEDIR) {
  window.open("" + BASEDIR + "/lizenzinformationen", "leinwandtaxi-lizenz", "menubar=no,scrollbars=no,toolbar=no,height=350,width=450");
}