The App Framework JavaScript library is a blazingly fast cross-platform UI library built for mobile HTML5 apps. The UI styles in this library are designed to easily adapt to your target platform (Google Android*, Apple iOS*, Microsoft Windows* 8, and new RIM Blackberry* devices) so you can give your application a target-specific look and feel.

The App Framework library also includes an optional query selector library that takes advantage of the latest built-in HTML5 and CSS3 features of browsers and supports valid W3C CSS selectors.