function OpenSubWin( page, w, h, sb )
{  var sw = screen.width, sh = screen.height;
  var ulx = ((sw-w)/2), uly = ((sh-h)/2);
  var sbt = (sb==1) ? 'yes' : 'no';

  var paramz = 'toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no,scrollbars='+sbt+',width='+w+',height='+h+'';
  var oSubWin = window.open( "", "SubWin", paramz );

  oSubWin.moveTo( ulx, uly );
  oSubWin.location.replace( page );
}