I am new to this forum because I am slowly learning jQuery and need some insight on something.

I saw a form on Qdoba.com. There is effect where if you click on a checkbox, the checkmark slides up and then if you uncheck it, the checkmark slides down.

Here is a link to the form:  http://www.qdoba.com/menu-nutrition/burritos-menu-nutrition

I would like to know what language this was created in and if possible, how might I best approach recreating this.

Thanks for you help in advance.