<?xml version="1.0" ?>
<?xml-stylesheet href="chrome://global/skin/" type="text/css" ?>

<window xmlns:html="http://www.w3.org/1999/xhtml"
        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">

<html:style>
* { float: right; }
#ping { float: none; }
</html:style>

<hbox>
  <menulist>
    <menupopup id="ping">
      <menuitem label="1"/>
    </menupopup>
  </menulist>
</hbox>

</window>