A Kaleidoscope in TypeScript

Having nothing better to do I've taken TypeScript and Cloud9 IDE for a ride and coded this little kaleidoscope for your amusement.

The code can be found on Cloud9 IDE or forked on GitHub.

Haven't tested it yet on Microsoft Internet Explorer but seems to work fine on Safari, Chrome and Firefox *.

Regarding TypeScript I really appreciate the syntax and type checking which it brings to JavaScript world. Anyone who has had to deal with large JavaScript code will see the benefits.

About Cloud9 IDE I've found it very convenient to use while on the road without access to my IDE of choice; the integration with GitHub is also a plus.

*Update: It works fine on IE 9