Thread:Extension talk:Header Tabs/Not sure if I'm missing something, but it's not working for me..

This is the wiki: http://elwiki.net/w/Test_Tabs

MediaWiki 	1.17.0 PHP 	5.3.6 (apache2handler) MySQL 	5.1.58

I downloaded the extension, installed it normally (it appears in Installed Extensions in the version page) but it just doesn't seem to be working for me. It seems like none of the jQuery stuff is working. Can anyone help me with this? Thanks.