teleprompter code

has anyone here made a gl-based teleprompter from jitter? got any
quick code you'd be willing to share? i have to rig one up in a
matter of hours and am looking for some time saving.

ps- this is NOT a help-me-with-my-end-of-term project thing. trying
to quickly bash something together for a client. i will give credit
where credit is due, of course.

j