The project is called flexible-js-formatting and includes my fast,flexible formatting and parsing functions for dates, times and numbers. As a bonus, I threw in the code for the Date Chooser and the HTML Input Mask, so pretty much everything is there.
All you need to do is grab a copy of the Subversion repository and hack to your heart’s content. One person has already contributed some work to reorganize the files and add some of his own patches.
If you’re looking to make the code better, you can scan the comments on my old posts for user-suggested improvements that never made it into the code.