I believe that Joel provides just about everything you need to know, he's got a downloadable PDF on his blog with some examples and lots of explaination in it. Although his material is very devloper-centric. Take a look at this article:
Thom Parker The source for PDF Scripting Info [url=http://www.pdfScripting.com]pdfscripting.com[/url]
The Acrobat JavaScript Reference, Use it Early and Often [url=http://www.adobe.com/devnet/acrobat/javascript.php]http://www.adobe.com/devnet/acrobat/javascript.php[/url]
http://www.acrobatusers.com/tutorials/2008/08/js_flash_buttons
Thom Parker
The source for PDF Scripting Info
[url=http://www.pdfScripting.com]pdfscripting.com[/url]
The Acrobat JavaScript Reference, Use it Early and Often
[url=http://www.adobe.com/devnet/acrobat/javascript.php]http://www.adobe.com/devnet/acrobat/javascript.php[/url]
Thom Parker
The source for PDF Scripting Info
www.pdfscripting.com
Very Important - How to Debug Your Script