StackOverflow - Change font family of markdown

so_code_fonts

// ==UserScript==
// @name       StackOverflow - Change font family of markdown
// @namespace  http://use.i.E.your.homepage/
// @version    0.1
// @description  enter something useful
// @match      http://stackoverflow.com/*
// @copyright  2012+, You
// @grant       none
// ==/UserScript==

window.addEventListener('load', function () {
    var codeEl = document.getElementsByTagName('code');
    for(var i = 0; i < codeEl.length; i++) {
        codeEl[i].style.fontFamily = "Source Code Pro";
    }
});