// ==UserScript==
// @name           Wikipedia auto-login part 2
// @namespace      http://www.patik.com
// @include        http://en.wikipedia.org/w/index.php?title=Special:UserLogin*
// ==/UserScript==

try {
  document.getElementById('wpRemember').checked = true;
  document.getElementById('wpLoginAttempt').click();
}
catch (e) { }