MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

// Mattyverse specific

$(document).ready(function() {
    if (mw.config.get('wgCategories').indexOf('Mattyverse') !== -1) {
        $('body').css({
            'background': '#B6E8FF url(https://www.worldofsp.com/wiki/images/thumb/0/01/Sol.png/295px-Sol.png) 0 0 repeat'
        });
    }
});