UpdatePanel Behavior If No Javascript?

I have an application where there's a button. If the user presses the button and
can run AJAX, I'd like the processing to happen via Atlas, but if the user
doesn't have AJAX capability, I just want to form to post back and process
normally, displaying the result to the user just as it would normally save for
undisplayed ProgressTemplate items.

1. Is Atlas designed to gracefully handle situations where browsers don't
support AJAX? 

2. Also, does the UpdatePanel and ProgressTemplate work for all browsers
including Safari?

Hi,

1. if you put the button inside an UpdatePanel, you'll get a full postback if
JavaScript isn't enabled; ajax postback otherwise.

2. No, the UpdatePanel doesn't work on Safari at the moment.

Regarding #1:

You can manually do that by doing whatever browser detection you want and
disable EnablePartialRendering on the ScriptManager. We're considering adding a
feature where we'll do some of that work automatically as well, but we haven't
finalized on it just yet.

Thanks,

Eilon