Steps to reproduce:
- Go to http://www.mediawiki.org/wiki/Project:Support_desk
- Reply to a topic
- Press preview
Error: $ is not a function
http://bits.wikimedia.org/skins-1.17/common/preview.js Line: 8
Error: $ is undefined
http://bits.wikimedia.org/skins-1.17/common/preview.js Line: 57
Version: unspecified
Severity: major