Main Product Image with Thumbnails underneath click and display over original image

Hi, I’m creating a product page however it is not a shoppable website.

I just have a main image and a few thumbnails underneath that are clickable and will load over the main image (not in a lightbox that pops up). Is there a code or plugin for this? I am having the hardest time figuring this out (new to this).

its pretty easy to do with jquery.

@petsportcom Can you share the product page?