Note: After saving, you have to bypass your browser's cache to see the changes. Internet Explorer: press Ctrl-F5, Mozilla: hold down Shift while clicking Reload (or press Ctrl-Shift-R), Opera/Konqueror: press F5, Safari: hold down Shift + Alt while clicking Reload, Chrome: hold down Shift while clicking Reload.
/* partielly from my user page at the upper sorbian wikipedia */

// for my buttons.js
mw.loader.load('//commons.wikimedia.org/w/index.php?title=User:Tlustulimu/buttons.js&action=raw&ctype=text/javascript');

// z wužiwarja Zacke w němskej wikipediji
// vom Benutzer:Zacke in dewp
function addlilink(tabs, url, name, id) {
    var na = document.createElement('a');
    na.href = url;
    na.id = id;
    na.appendChild(document.createTextNode(name));
    var li = document.createElement('li');
    li.appendChild(na);
    tabs.appendChild(li);
    return li;
}
function addtoolboxlinks() {
var tb = document.getElementById('p-navigation').getElementsByTagName('ul')[0];
//addlilink(tb, '/wiki/Wikipedija:Projekt_za_předłohi', 'Projekt za předłohi', '');
//addlilink(tb, '/wiki/Wikipedija:Infokašćik', 'Projekt za infokašćiki', '');
//addlilink(tb, '/wiki/Wikipedija:Požadane_přełožki', 'Požadane přełožki', '');
//addlilink(tb, '/wiki/Kategorija:Strony_k_spěšnemu_wušmórnjenju', 'SW', '');
//addlilink(tb, '/wiki/Kategorija:Kandidaty_za_šmórnjenje', 'Kat. Kand. šm.', '');
//addlilink(tb, '/wiki/Wikipedija:Kandidaty_za_šmórnjenje', 'Wik. Kand. šm.', '');
addlilink(tb, '/wiki/Special:PrefixIndex', 'Pages', '');
addlilink(tb, '/wiki/User:Tlustulimu/Nawi', 'Nawi', '');
addlilink(tb, '/wiki/User:Tlustulimu/Nawi2', 'Nawi2', '');
addlilink(tb, '/wiki/User:Tlustulimu/Babel', 'Babel', '');
//addlilink(tb, '/wiki/MediaWiki:Gadgets-definition', 'Gadgets', '');
addlilink(tb, 'irc://irc.freenode.net/#wikipedia-hsb', 'IRC', '');
}
$(addtoolboxlinks);
//if (window.addEventListener) window.addEventListener("load", addtoolboxlinks, false);
//else if (window.attachEvent) window.attachEvent("onload", addtoolboxlinks);

// install [[User:Cacycle/diff]] text diff code
mw.loader.load("//en.wikipedia.org/w/index.php?title=User:Cacycle/diff.js&action=raw&ctype=text/javascript");
 
// install [[User:Pilaf/Live_Preview]] page preview tool
mw.loader.load("//en.wikipedia.org/w/index.php?title=User:Pilaf/livepreview.js&action=raw&ctype=text/javascript");
 
// install [[User:Cacycle/wikEd]] editing page extension, in-browser text editor
mw.loader.load("//en.wikipedia.org/w/index.php?title=User:Cacycle/wikEd.js&action=raw&ctype=text/javascript");