images after update product in ajax return

[Pieter]

On my product page i want my images to look like this:

https://www.stoksson.com/shop/en/invisible-undershirts/4-1-invisible-undershirt.html

But after updating quantity, size etc. they change to the default  (picture with thumbnails underneath).

How can i disable this bit? Cant find it in core.js

[musicmaster]

Try product.js. Most likely you need the product.js of your theme. 

Most likely it is the displayImage() function.