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

function TwoFramesBack(F1,F2) {
  history.back();
  history.back();
}

function TwoFramesBack_Old(F1,F2) {
  Frame1=eval("parent."+F1);
  Frame2=eval("parent."+F2);
  Frame1.history.back();
  if (!window.opera) window.setTimeout("Frame2.history.back()",10);
}

function TwoFramesForward(F1,F2) {
  Frame1=eval("parent."+F1);
  Frame2=eval("parent."+F2);
  Frame1.history.forward();
  if (!window.opera) window.setTimeout("Frame2.history.forward()",10);
}