Fix left panel in FB
// ==UserScript==
// @name FB Edit
// @namespace localhost
// @include https://www.facebook.com/*
// @require https://greasyfork.org/scripts/10546-mujs-2-0/code/MUJS%2020.js?version=57895
// @version 1.0
// @grant none
// @description Fix left panel in FB
// ==/UserScript==
sel('div#leftCol').style.position = 'fixed';
sel('div#leftCol').style.height = '550px';
sel('div#leftCol').style.overflow = 'auto';