You need to make 2 buttons switching the layouts category t

you Need to make 2 toggle button layouts products categories in Virtuemart. the user can choose the most convenient type of display of list of goods.
Ie displays the file products.php
Need 2 buttons that would have been the possibility of withdrawal (without page reload) products_horizontal.php well and accordingly back.

Important! I need to know how You do it. Ie will need detailed instructions. what, where, which files You change or add.

Virtuemart Version 3.0.7
Joomla Version 3.4.1

From You the price and time.
Without price – just a failure!
Thanks in advance!