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!