Creating a ScrollView that works like Pages

Question

I'm trying to create a scroll view that works like Apple's Pages app on the iPad. See pic below. I can create a similar scroll view with subviews containing the individuals pages, spaced apart as shown, and with pagingEnabled, it scrolls OK, but I want to achieve a scrolling effect that keeps the subviews centered once they've scrolled completely into view. So I want each page to scroll to a centered position in the scrollview, but as the pagingEnabled behavior scrolls the entire bounds left or right, I end up with a partial page or pages showing. What would be a good approach to this?

Thanks!

//Scott