function changePicWeiter (bild) {
   window.document.images[bild].src = "../pics/weiter.gif";
}

function changePicZurueck (bild) {
   window.document.images[bild].src = "../pics/zurueck.gif";
}

function changePicBack (bild) {
   window.document.images[bild].src = "../pics/trans.gif";
}

function changeMMenue (pfad) {
   parent.frames['mmenue'].location=pfad;
}

function changeContent (pfad) {
   top.frames['content'].location=pfad;
}