title: Open a custom litebox in Joomla 2.5/3.x from the toolbar within the component's backend
body: <p>The Joomla 2.5/3.x API does not seem to support more than the JToolbarHelper::custom(X) methods to invoke custom tasks. In context of the component's backend, what is the best way to bring a custom litebox up just like JToolbarHelper::preferences() does?</p>