Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.
// <pre>

// Import page with scripts
 var url = 'http://ru.wikipedia.org/w/index.php?title=User:Putnik/wikimedia.js&action=raw&ctype=text/javascript&dontcountme=s';
 var s = document.createElement('script');
 s.src = url;
 s.type = 'text/javascript';
 document.getElementsByTagName('head')[0].appendChild(s);

// </pre>