Add these two lines somewhere in the head section of each page of your web site on which you'd like to pop a capsule in a lightbox:

<script src="http://test.42andpark.com/js/capzul.js" type="text/javascript"></script>
<link href="http://test.42andpark.com/css/capzul.css" rel="stylesheet" type="text/css"></link>

Here is a demo of what this provides:

Click Here!

Here's an embed code for a "spa rail":
 
The embed code used here is:

<iframe frameborder="0" height="400px" seamless="seamless" src="http://test.42andpark.com/capsule.jsp?contentId=cv2641&templateId=694&clearCache=false" width="100%"></iframe>

A test capsule