Using my own answer for What is best approach to show the component page in popup-modal window without header and footer?, I mentioned that I was getting JS errors, so when as I further investigate, they persist:
TypeError:Argument 1 of Node.contains does not implement interface Node http://mysite/mediamedia/system/js/modal.js
Update: Turns out to be a Firefox issue, not Joomla, so pondering deleting the question pending resolution.
I put this lines directly into
index.php of the Protostar template of a fresh default installation of Joomla 3.2.4 and tried it that way.
<?php JHTML::_('behavior.modal'); ?> <a class='modal' href='index.php?option=com_content&view=article&tmpl=component&id=10&Itemid=180'>Modal link</a>
A small popup does appear, but contains nothing - has anyone dealt with this before? - I'm stumped.