// ==UserScript==
// @name           reload youtube simple URL
// @namespace      http://www.pshared.net/
// @author         Ussy
// @include        http://*.youtube.com/watch?*
// @exclude        http://*.youtube.com/watch?*&feature=PlayList&*
// @version        1.1.1
// ==/UserScript==
(function() {
  function parseQueryString(s) {
    var result = {};
    var params = s.split("&");
    for each (var param in params) {
      var pair = param.split("=");
      result[pair[0]] = pair[1];
    }

    return result;
  }

  var href = location.href;
  var index = href.indexOf("?");
  var params = href.substring(index + 1);
  if (params.split("&").length == 1) {
    return;
  }

  var pair = parseQueryString(params);
  if (pair.v) {
    location.replace(href.replace(params, "v=" + pair.v));
  }
})();