function copen(url,rw,rh,tl,tt){
  cwin = window.open(url, 'cwindow', 'location=0,directories=0,status=0,menubar=0,scrollbars=0,resizable=0' );
  cwin.resizeTo (rw,rh);
  cwin.moveTo(tl,tt);
}

function DoMenu(MenuValue){
    location.href=MenuValue;
    return true;
}