activescaffold forms and <script> tag

Hi,

I want to put an <script> tag on an activescaffold form. The docs say
I can use a helper or a form overhide... but when I put a <script> tag
in one of those, it gets stripped. I think it's some security stuff.
But I need to trigger an action when the form is loaded to adjust some
presentation logic. How can I put the script tag into my form?

Thks,

Bruno Reis

I foud the answer:

http://prototypejs.org/api/ajax/updater

About evalScripts and defining functions