function openWindow(file, x, y, name) {
  var bars = 'directories=no, location=no, menubar=no, status=no';
      bars += ', titlebar=no, toolbar=no';

  var options = 'scrollbars=no, width=' + x + ', height=' + y +', resizeable=no';
  var features = bars + ',' + options;

  var newWindow = open(file, name, features);
  childWindow.document.close();
  childWindow.focus(); }