Thanks for responding so promptly David. The link you provided deals with using the Dojo framework. I am currenlty using the prototype framework for this web app. Is refreshing just a div still possible if we are using the prototype framework and not dojo?
You can use whatever framework you want, but the Dojo tags work with Dojo. If you're using something non-Dojo then obviously the tags won't work, but you can still do things however you'd do things normally.