function encrypt(text)
        {
          var keycode = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
          var rot13 = new String()

          for(var i = 0; i < text.length; i++)
          {
            var codechar = text.substring(i, i + 1)
            var pos = keycode.indexOf(codechar.toUpperCase())

            if(pos >= 0)
            {
              pos      = (pos + keycode.length / 2) % keycode.length
              codechar = (codechar == codechar.toUpperCase()) ?
                 keycode.substring(pos, pos + 1) :
                 keycode.substring(pos, pos + 1).toLowerCase()
            }
            rot13 = rot13 + codechar
          }
          //obj.form.Text.value = rot13
          return rot13;
        }