ProDevTips.com has posted part two of their look at creating a feed reader with Ajax, the Zend Framework and Smarty today.
In this latest part, they pick up where they left off before and march on towards the goal. They point out another tutorial over on the IBM developerWorks website that can help you understand a bit more about the Ajax side of things before getting into part 2, but it's not a requirement.
They create the page with the Javascript include files and a form with a button to make the action happen.