For your Joomla powered website, here’s a ‘tweak’ I’ve added this AM http://www.joomlacontenteditor.net/downloads/editor first get the right version, ok, got that, now for the extras from JoomlaBamboo.com, 2 things to add to your JCE for Joomla,
First get this, JB Type, http://bit.ly/dClLPG it is a Joomla style and typography plugin for your content. By using some simple Joomla syntax you can create some awesome typography for your site without knowing any html at all.
Second, on that same URL get the JCE JB Type plugin which provides a drop down list of JB Type styles available from the within the Joomla editor.
Your Joomla should be version 2.5.6 now (note: posted in August of 2012, 2.5.17 is current now as of 01/07/2014) so be sure you’re using the compatible versions of the above and enjoy your JCE editor addon like I have.