Get a copy of Caja from subversion.

1. ant jars
2. cd experimental/prototype
3. rake caja:cajole_gadgets CAJA_SRC_PATH=../.. (yes, you need Ruby and rake)
4. you will find in test/unit/tmp a bunch of html pages and javascript and logs. Read the logs to see compile-time errors. Load the HTML in your favourite browser (== FF3 with Firebug) and enjoy. Start with truth_test.