aphex/leap-cursor-library.js — pull request #15 by Goutte (2014-01-14 14:39:39+00:00)
Title: Made mouse and UI events cancelable

Done !

Also, look at [`initUIEvent`](https://developer.mozilla.org/en-US/docs/Web/API/event.initUIEvent), it only takes 5 arguments, we're passing the full 15.