A Simple Solution to iOS Scrolling
One of the most common metaphors for iOS applications, and especially iPad applications, is an independently scrolled window pane. In the iPad’s mail application, for example, you can easily scroll the message list and the current message itself independent of one another. This is such a common thing on the iPad that transferring it over to iOS web applications seems like a trivial matter.
A simple solution, however, would be to simply change the iPad’s overflow support. In most modern browsers, setting a static height / width for a div element and adding the
overflow: scroll; property in CSS will result in an independently scrollable portion of the page should content exceed the height / width boundaries. The iPad does support scrolling in these circumstances, but it requires using two fingers and is often slow and unresponsive. Most Android browsers (including, as of the time of this writing, the Galaxy Tab) don’t support this type of scrolling at all.
Changing the device’s behavior to automatically add the native style tweening, momentum, and scrollbars to these elements would allow UI developers to very easily add intuitive independently scrolling sections to their iPad web applications. Even better, this solution graceful degrades as desktop browsers would automatically add scrollbars to the content making it easy to understand that additional data is available.
UPDATE: Looks like this feature is making its way into iOS 5! http://functionsource.com/post/scrollability-can-hopefully-become-a-shim