Lebedev's tab slider?

Question

JavaScript

Many sites made by You-know-who studio use such a slider ( example , more ):





Is there a ready-made plug-in for such switchers? (jQuery UI Tabs don't suggest)

Answer 1

I don't think it would be hard to write it myself.
In the source, everything is clear and understandable www.chancecar.ru/js/price.js

Answer 2

There is no connection between the examples you have given, in the first case the base element moves, in the second the class of the parent element changes. This behavior is written in 5 minutes.