jQuery.getScript('//meta.wikimedia.org/w/index.php?title=User:Krinkle/Scripts/InsertWikiEditorButton.js&action=raw&ctype=text/javascript', function () {

  krInsertWikiEditorButton({
    "id": "zdroj",
    "icon": "http://upload.wikimedia.org/wikipedia/commons/3/33/Button_unreferenced.png",
    "label": "Chybí zdroj",
    "insertBefore": "\x7b\x7bsubst:Fakt",
    "insertAfter": "\x7d\x7d",
    "sampleText": ""
  });
});