mozilla/kuma — pull request #2740 by darkwing (2014-09-11 16:57:26+00:00)
Title: fix bug 1047018 - Fix login tracking with auth script

So it turns out:

1. The label text was simply switched around, which made it seem like the other even was happening.

2. The `on` method first receives an event object, so the arguments start at index 1 of the callback.