Is there a lightbox feature built in?

Enfold uses PrettyPhoto: http://www.no-margin-for-errors.com/projects/prettyphoto-jquery-lightbox-clone/ which also supports iframes or “hidden inline content”:

For an iframe use following html code:

<a href="http://www.twitter.com?iframe=true&width=400&height=200" rel="prettyPhoto">Twitter.com</a>

and replace Twitter.com with your url.

For inline content use:

<a href="#inline-1" rel="prettyPhoto" >More information</a>

<div id="inline-1" class="aviahide">

<p>This is inline content opened in prettyPhoto.</p>

</div>

and insert following code into the quick css field to hide the content

.aviahide {

display: none;

}