he surrogate should be
      // be converted to U+FFFD when converting to UTF-8 so it should have the
      // same hash as the one inserted before
      var scr2 = document.createElement('script');
      scr2.text ="//\uD801\nscript_ran();";
      document.body.appendChild(scr2);
    </script>
</body>
</html>
