How to migrate JavaScript code for overlay pop-up to WP site?

I have a link on http://www.lastlonglifelong.com/ which, when clicked, pops up an overlay with the contents of a predefined URL:

<a class="fancybox fancybox.iframe" href="http://www.evaneverman.com/about/">Evan Everman</a>

The overlay is driven by some javascript code which is in public_html/js and there is some related CSS under public_html/css.

I’ve now migrated the HTML over to a WP site – http://www.evaneverman.com/thefortyminutelover/. Obviously, without the Javascript, when the link is clicked, thery will be no overlay and the user is simply brought to the new page.

What is the process for enabling this JavaScript and getting the overlay working on my WP site?

Thanks