<extension location="Toolbar">
  <info text="New Troco" description="Click to install the troco barter extension."
    imageUrl="http://troco.ourproject.org/gadget/images/icon.png" />
    <insertGadget
      url="http://troco.ourproject.org/gadget/org.ourproject.troco.client.TrocoWaveGadget.gadget.xml" />
</extension>