@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

@-moz-document url("chrome://browser/content/browser.xul"),
      url("chrome://navigator/content/navigator.xul"),
      url("chrome://messenger/content/messenger.xul"),
      url("chrome://messenger/content/messageWindow.xul"),
      url("chrome://rubberducky/content/xul/mainwin.xul") {

  #appcontent {
    -moz-box-orient: horizontal; /* remove this line to show the list at the top */
    -moz-box-direction: reverse; /* remove this line to show the list at the right side */
  }
}