Dale, thanks for your interest. Unfortunately we're not able to make the source code for the gadget available (it uses our backend and our site's authentication/cookies directly, so it won't work hosted elsewhere).

If you're interested in developing a gadget that contains more functionality (which, of course, you're more than welcome to do :) then it would need to use the API and authenticate using that instead.

Thanks Emily for getting back to me, I'll take a look at the API.