<?xml version="1.0"?>

<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>

<window id="example-window" title="Example 7.2.2"
        xmlns:html="http://www.w3.org/1999/xhtml"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<hbox height="400">
  <button label="Copy"
          oncommand="this.parentNode.appendChild(this.nextSibling.cloneNode(true));"/>

  <vbox>
    <button label="First"/>
    <button label="Second"/>
  </vbox>
</hbox>


</window>

