Welp, a lot of the Javascript dies when using Firefox.

I'm not sure what's happening, but every few months or so, the Javascript breaks when using the gallery in Firefox (using Firefox 15.0). I'm not sure if it's a problem of pushing updates without testing it on Firefox, or if it's just some random anomaly happening because Thor is playing jokes on me and messing up my computer.
If I try hitting the 'next' button in gallery mode, I get an error saying 'b' is undefined in console. The arrow keys also don't seem to work in Firefox.

Aside from that, I love the latest addons, so keep up the awesome work! :3
Love yah all.