Using any library that allows alternate content under the flash, and deeplinks in the flash, will make the search engines crawl your alternate content, while still providing full page flash for your customers.

This will enhance visitor experience, which leads to sales, while still providing a “standard html” page for search engines and visitors using phones or other browsers without javascript and/or flash.

Why deny yourself something, when you can have the best of both worlds?

Take a look at SWFAddress, it’s free and easy to implement and makes all this possible. And there are other free scripts as well that you can find all over the web.