Return Json from the call. It's just data that is used by the view in some way, for example, a lookup.

>Thanks Craig. What I am little confused about is what happens with the Ajax reponse. But Ajax just reponds with a datastructure that gets redisplayed in HTML/JScript that is generated in the View component. I was just wondering if Ajax returns more than just data to be displayed, then what the user sees is not prepared in View and so the MVC paradigm is broken no?
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>But I guess this is a very rethorical question. I guess I need to deepen my understanding. Many thanks for your patience in helping me with that.