// ==UserScript==
// @name        StumbleOut
// @version     2.3
// @author      raina
// @namespace   raina
// @description Breaks the original link out of StumbleUpon frames and rewrites YouTube embed URLs to their proper video pages.
// @license     http://www.gnu.org/licenses/gpl-3.0.txt
// @include     http://www.stumbleupon.com/su/*
// @run-at      document-start
// @grant       none
// ==/UserScript==
(function() {
"use strict";
var ready = function() {
if ("complete" === document.readyState) {
observe();
}
};
var observe = function() {
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if ("class" === mutation.attributeName) {
if ("undefined" === typeof iframe || !iframe) {
iframe = document.querySelector('.stumble-frame');
}
if ("undefined" !== typeof iframe && iframe) {
if (/youtube\.com\/embed/.test(iframe.src)) {
var video = iframe.src.replace(/(embed\/)([\w\d-]+)(\?.*$)/, "watch?v=$2");
var timestamp;
if (timestamp = iframe.src.match(/t=\d+m\d+s/)) {
video += "&" + timestamp[0];
}
window.location.href = video;
} else {
window.location.href = iframe.src;
}
observer.disconnect();
}
}
});
});
var config = {attributes: true};
observer.observe(document.body, config);
}
if (window.self === window.top) {
var iframe;
document.addEventListener("readystatechange", ready, false);
}
}());