User blog comment:Reistenger/Editing/@comment-3557616-20130813230524/@comment-3557616-20130814195935

Supposedly it was dependent on some Template: Toggle Javascript, which I put here:

http://towerofgod.wikia.com/wiki/MediaWiki:Common.js

Hopefully that helps... although I am seeing a lot of image switches (like in most of the part 1/part2 character infoboxes) that seem to be working fine. And to replace images you can just upload an image to the wiki under the same title and choose to replace...