function frameresize() {

//     alert("-- jetzt --");
//     ***  find the height of the internal page
       test1 = (frames['Mitte'].document.getElementById('Mitteframe').scrollHeight);
//     ***  change the height of the iframe
       document.getElementById('iFrame1').style.height = test1;

//     test2 = (frames['Mitte'].document.getElementById('Mitteframe').offsetHeight);
//     test = (test1 || test2) + 'px';
//     document.getElementById('iFrame1').style.height = test;

    }