Forum:Hide/Show is not working anymore

On this and this template Hide/Show is not working anymore. It just stopped working. I edited common.js after it stopped working (I copied hide/show part from another wiki and it worked until I reload page). I also tried to open page on other browsers but it does no work.
 * When the new skin came out, Wikia changed the pages needed for custom javascript, so Common.js only works for the Monobook skin (as a monobook user, show/hide works fine). In order to get Common.js to work as it should, there's an easy fix. At the bottom of MediaWiki:Wikia.js, place this code:

importScriptURI('http://spongebob.wikia.com/index.php?title=MediaWiki:Common.js&action=raw&ctype=text/javascript')
 * That will automatically import the code you have at common.js to the Wikia skin, and allow users who use both skins to see the javascript you've put there.  Random Time  16:56, April 22, 2011 (UTC)
 * Oddly enough, Oasis does actually import Common.js, even though it doesn't import Common.css. You've got collapsible tables in your Wikia.js too - you should delete the Wikia.js one, because any error in that will overwrite the correct version in Common.js.
 * I stand corrected, Monchoman's advice should fix your problem  Random Time  17:01, April 22, 2011 (UTC)
 * None of your advices work, sorry.
 *   AW10    Talk   Contribs   E-Mail    17:10,4/22/2011
 * I also tried to copy wholde common.js to wikia.js but it does not work. So, I delete wikia.js again. Do you have any more advices. btw. Maybe wikia's creator do sth to wikia.com that result this. Except that what RandomTime said.