Raw Source
maloomf9 / Furaffinity Sidebar Remover 

// ==UserScript==
// @name        Furaffinity Sidebar Remover
// @namespace   http://www.furaffinity.net/user/maloo
// @description Removes the sidebar from FA, moves the submission info back to its original location. May break at any time, be sure to update if things start looking weird
// @include     *furaffinity.net/view/*
// @include     *furaffinity.net/full/*
// @version     1.05
// @grant       none
// ==/UserScript==

var subInfo = document.querySelector("td[style*='width'] td.alt1");

var insPoint = document.querySelector("table[width='98%'][cellspacing='1'] > tbody > tr:nth-child(1) > td:nth-child(1)");
var subTitle = document.querySelector("table[width='98%'][cellspacing='1'] > tbody > tr:nth-child(1) > td:nth-child(1)");
var elem = document.getElementById("ad-extra-square");

subTitle.setAttribute('width', '70%');
subInfo.setAttribute('width','30%');
subInfo.setAttribute('rowspan','2');
insPoint.parentNode.appendChild(subInfo);
elem.parentNode.removeChild(elem);
elem = document.querySelector("#submission > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(2)");
elem.parentNode.removeChild(elem);
var sit = docuement.querySelector("table[width='98%'][cellspacing='1'] > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(2) > table:nth-child(1)");
sit.setAttribute('valign', 'top');