sS hjs_fileUploadBase64Encoder() {

  ret hscript([[

    var fileConverted = false;

    function submitWithFileConversion(form) {

      if (fileConverted) return true;

      fileConverted = true;

      var file = $('#fileUploader')[0].files[0];

      if (file == null) return true;

      var reader = new FileReader();

      // delay form submit until reader is done

      reader.onloadend = function () {

        var b64 = reader.result.replace(/^data:.+;base64,/, '');

        $("#f_file_base64").val(b64);

        console.log("Got base64 data: " + b64.length);

        setTimeout(function() {

          $(form).submit();

        }, 1000);

      };

      reader.readAsDataURL(file);

      return false;

    }

  ]]);

}