function popup (Adresse) {
  Fenster1 = window.open(Adresse, "Zweitfenster", "width=614,height=515");
  Fenster1.focus();
}

function galerie (Adresse) {
  Fenster1 = window.open(Adresse, "Zweitfenster", "width=640,height=420,scrollbars=no,resizable=no,left=100,top=100");
  Fenster1.focus();
}