Do you recognize this functionality and is there a plugin for it?

Greetings, just past halfway down this page on the link below is a section called “Features” and you can see by clicking on the links to the left, the area on the right changes.

I believe that’s called Ajax. Anyone know if there’s a plugin that does that? What search terms might I put in the Google to find such a thing?

Thanks very much in advance.

Link is here: http://www.hostingzoom.com/web-hosting.php