Roll-your-own and rel attribute

Hi there,

Great plugin! Created what i need with the roll-your-own method in the html mode and all worked perfectly until some of the content editors in the team edited using the visual mode, which stripped out the ‘rel’ attribute within the <div>.

Any ideas on how i can fix this without telling them not to use visual editor?

code is something like this:

<div class="collapseomatic" id="team" rel="group-highlander"><a href="#top"><img content /></a>
<h2>Title</h2>
<p>Content</p>
</div>

thanks!

http://wordpress.org/extend/plugins/jquery-collapse-o-matic/