function FensterOeffnen (Adresse)
   {
    Fenster1 = window.open(Adresse, "Zweitfenster", "top=10, left=10, height=450, width=620, toolbar=yes, scrollbars=yes, menubar=yes");
    Fenster1.focus();
   }

   function FensterAnmeldung (Adresse)
   {
    Fenster1 = window.open(Adresse, "Zweitfenster", "top=10, left=10, height=550, width=680, toolbar=yes, scrollbars=yes, menubar=yes");
    Fenster1.focus();
   }