MobileCrunch noticed something interesting about the iPad User Guide hidden in the iPad Safari's bookmarks. It's a web app, but it doesn't feel like a web app -- the views scroll independently and smoothly, "clicking" is exact, and the whole thing runs much more like a native iPad app than anything web app developers have been able to put together yet. Why? Apple's got a secret -- Done21 is calling it "AdLib," after a file found somewhere in the source code, and apparently it's a library that connects UIKit to HTML, CSS, and Javascript. It's a go-between framework that has no documentat
