function popUp (url, width, height) {
  var pop = window.open(url, "popUp", "width=" + width + ",height=" + height + ",menubar=no,status=no,scrollbars=yes,resizable=no,status=no,left=" + (screen.width/2-width) + ",top=" + (screen.height/2-height));
  pop.opener = self;
  pop.focus();
  }

function closeIt () {
  opener.focus();
  window.close();
}