JSF or Struts

[Harsha Pherwani]

Hi,
We have a web application designed using MVC framework. Besides a web view, we now need to support mobile users using WML.

We are considering JSF and struts (customising struts to handle WML client).
I have read that JSF supports disparate clients efficiently using RenderKits.

Can anyone suggest whether JSF has an easy to use WML RenderKit. How does a renderkit work? Is there any good documentation online?

Thanks,
Harsha