Inputs as to how this site was done?

Hi all,

I have an assignment to emulate this site:

If anyone can recommend any sample sites or tutorials as to how to achieve this type of Flash movie, I’d greatly appreciate it. The transitions, animations are so clean and smooth, how is this achieved? And are the images created in Illustrator, Photoshop, and then imported into flash, or just drawn in Flash? I’m thinking that it’s primarily motion tweening (no action scripting) at 10-12 fps. I’m also trying to look for sample files/tutorials, but hasn’t produced any results for me. Any suggestions, help, advice, would definitely be appreciated.