Auto Upvote

// ==UserScript==
// @name         Auto Upvote
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @include      http://rule34.paheal.net/*
// @grant        window.close()
// ==/UserScript==

(function() {
    document.evaluate('/html/body/nav/section[4]/div/form[1]/input[4]', document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.click();
    document.title.match(/.*Rated Post/g)
    window.close()

})();