I have a piece of Javascript code that changes some values in my HTML. However, for security reasons it would be much better that the end user could not read my code. I know there are ways to obfuscate it, but they can all get cracked with more or less effort. What I would need is some way of executing code on the client's side, just as Javascript does, but by no means visible in the user's machine, like PHP or Perl. Is it possible?