Roms43 Downloader Userscript

// ==UserScript==
// @name         Roms43 Downloader
// @namespace    http://roms43.com/
// @version      1.0
// @description  Generates direct download links on roms43
// @author       Huntereb
// @match        *roms43.com/download/*
// @grant        none
// ==/UserScript==
/* jshint -W097 */
'use strict';

var dlbut = document.createElement('button');
dlbut.innerHTML = 'Download';
dlbut.setAttribute('type', 'button');
dlbut.setAttribute('onclick', "window.open(tr_download_url);");
dlbut.name = 'dlbut';

var trash = document.getElementsByClassName('btn btn-danger btn-lg margin download_link');
trash[0].parentNode.removeChild(trash[0]);

document.getElementsByClassName('media text-center margin20')[0].appendChild(dlbut);