Horizontal Accordion menu in flash cs3?

Good morning Everyone,

I am putting together an online portfolio and I really like the way the Horizontal Accordion menu looks. Click link below to .SWF file for example.

http://www.ffiles.com/flash/menus/ho..._menu_741.html

I was wondering if anyone could shred some light on how this is created. I know there is mentioned about installing a plug-in but I was wondering if it could be created without the plug-in being installed.

Any help that someone could provide me would be greatly appreciated.

Thanks,
Alan