function einFrames(F1,URI1) {
  Frame1=eval("parent."+F1);
  Frame1.location.href = URI1;
}
function zweiFrames(F1,URI1,F2,URI2) {
  Frame1=eval("parent."+F1);
  Frame2=eval("parent."+F2);
  Frame1.location.href = URI1;
  Frame2.location.href = URI2;
}