custom toolbar button
<a href="//commons.wikimedia.org/wiki/User:Erik_Baas" title="User:Erik Baas">Erik Baas</a>
2007-10-04
based on <a href="//commons.wikimedia.org/wiki/File:Button_base.png" title="File:Button base.png">Image:Button base.png</a> by <a href="//commons.wikimedia.org/wiki/User:Tgr" title="User:Tgr">Tgr</a>