Flash Website: Timeline v. Document Class

I have been using Flash for a few years now to build smaller apps, but am now wanting to build a full scale website and I need some advice about the best way to build it.

Is it better to build separating pages into different keyframes on the timeline or using a document class and setting up pages as separate classes?

Are there general best practices for building a site with Flash?

This is going to be a photographer’s website built with AS3.

Thanks in advance.