function openCtrWin(theURL,winName,winWidth,winHeight,otherFeatures) {
  var x = 0;
  var y = 0;
  x = (screen.availWidth - winWidth) / 2;
  y = (screen.availHeight - winHeight) / 2;
  if ( otherFeatures != "" ) {
    otherFeatures = "," + otherFeatures;
  }
  var features = "screenX=" + x + ",screenY=" + y + ",width=" + winWidth + ",height=" + winHeight + ",top=" + y + ",left=" + x + "'" + otherFeatures;
  var newWin = window.open(theURL,winName,features);
  newWin.focus();
}