Let me explain what I want, I want a slideshow of images in category "images" but here is what complicates things, I want 4 to show at the same time, then after a few seconds, 4 more show, etc. Relatively 150 pixels each, for the homepage. It does not seem like anyone tried it, it doesn't seem there is any way to do this with mediawiki. I tried the carousel effect (the one used to display latest images on the wiki, to the right of this page for example) it does not seem to be understood by wikia.css, I went to many pages of wikimedia trying to get it to work. Modified common.css and common.js the way that they explain. nothing.
It is even possible to do. And I do not want the slideshow that everyone is familiar with, I'd like something unique. That wont work for my wiki, sorry I just don't think it is the best for my wiki.
I appreciate anything anyone can do to help. If some has something similar in some wiki, please show me!