With Firefox, I saw JavaScript in the result pane the first time but now it works fine. Perhaps it was behind a version or two the first time.

Went back with Safari (version 6, same version) and it worked fine this time. Before, the background didn't show up properly, only the cartridge door.

Weird.

Works perfectly for me on Safari 6.

worked in IE10 as well (still can't log in to HN using chrome...odd)

It worked for me in FF20.

Worked fine for me in Iceweasel 20.0 (Debian's Firefox).

No issues whatsoever with Firefox 21 on XP