UNDO and REDO not works

[NomikOS]

HI ALL!
Here´s the matter:

- I've a frameset with 3 frames.
- Main frame called "content" content a TEXTAREA for edit posts.
- UNDO and REDO not works ! <------------------- !!!
- Requirements for my users: IE 5.0 +.
- I use php,javascript.
- I'd seen other sites with the same problem.

Anybody knows what happen?
Bye and Thanks.-

[redux]

please do not cross post. you've already asked this question in the correct forum...