Factoid Pop-up Plugin

Does a plugin like this exist for wordpress?

Scroll over the numbers on the site below and notice how it brings up a bible verse. Click the verse and a popup window opens up and lists the verse.

http://www.esvonline.org/search/rom12%3A2/

Is there something like this already available? This would be really helpful if you want a factoid to pop up in its own window without interrupting the flow of your blog post.