[CyberFonic]

I had to re-check the date of the post and it isn't 2006 but 2012 !!! Three observations:

1) If your users aren't using a HTML5 compliant browser then they should update. Supporting a multitude of outdated browsers is just way too big a workload.

2) Using JavaScript/AJAX intelligently reduces the load on your server. Why generate all that HTML on demand at the server when you have a dual core CPU with a couple of Gigs of RAM twiddling its thumbs at the client end?

3) With mobile apps, your users will thank you for minimising the amount of traffic your app generates. Why push down full pages when only the data needs to be sent?