SEO, document source

I noticed on the Backbase site, as I noticed on some other sites, that when I navigate the site all (visible) content can be found in the document source. However, the AJAX sites I make using ASP.NET Ajax does not show the content, which is loaded by javascript, in the document source.
This makes me wonder:

- Do search engines 'see' this content as well ?
- What do I do to get the same effect on my Ajax sites, or is it a backbase functionality? (The other site with this effect used Ajax.NET and jQuery)

Many thanks in advance!

Greetings,

Cherice

I think it's primarily a

I think it's primarily a characteristic of Ajax in general, not Backbase specific.
Also see http://en.wikipedia.org/wiki/Ajax_%28programming%29#Disadvantages