Google js lib Closure

Discovered Google javascript library Closure Library. It's used by many of Google's services (e.g. gmail, maps, docs, sites, books, reader, blogger, picasa) Worth looking into. It's a heavy weight one. It even supports drag'n'drop. At http://code.google.com/closure/library/.

The other most popular js lib is jQuery. But in comparison, it's peanuts. See: jQuery Basics Tutorial.