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.
// A link to Flickr2Commons at the toolbar
// see also [[:c:com:Flickr2Commons]]

function addFlickrtwoCommons(){
          mw.util.addPortletLink("p-tb","https://tools.wmflabs.org/flickr2commons/" ,"Flickr2Commons","tb-Flickr2Commons","Flickr2Commons");
}
 
addOnloadHook(addFlickrtwoCommons);