Detective story - What do auto.ru and brazzers have in common?

I recently got on the site auto.ru, in search of cars. And in a friend I saw a very interesting gallery widget which I had already seen somewhere , it looks like this:



That is, there are some “selectors” below the photo, the transition to which helps to see all the images related to the product.

One of the projects that I do now is an online auto parts store, and there is a need to demonstrate the maximum number of product photos in the catalog.
')
Being interested, I, as a typical lazy developer, decided to check: what kind of a wonderful plugin is this. I climb into the code and see the classes:



As a person who has reached puberty, I understand that there is something unclean here. I read the code further and understand that my doubts were not groundless:



Interestingly, this is another (after the film search) crap from "Yandex", or just "Easter egg"?

PS: Finally, the elegant name of the template (apparently):



PPS: If someone knows similar libraries / plugins, throw in a comment or in a personal.

UPD. after all Easter eggs!

UPD2.
One of the options for the gallery (jQuery) - jsfiddle.net/hhz9bu0z from wdmaster