Right now the home screen of my iPhone apps start with a table, each row tapped slides the table to the left and shows the detail page. That's fine for the iPhone. But on the iPad, the list should pull to the left half of the screen and the right half show the detail page of the item selected.

Which existing GUI platform has this coding built in? Or do I need to code this myself?

If I wanted to tap a list at left and make its detail page appear at right, what kind of scripting will be required? All I can think of is old-fashioned frames!