So this is kind of a specific and weird question for a polish site, but its premise is general and you don't need any understanding of the site itself to get what I'm talking about.
Anyway, as said in the title, I need to be able to download the full-sized image of the product on the site. The problem is, the images of the products are shown through JS, which means to accomplish my goal I can't simply right-click and download. To see what I'm talking about simply click on the big image of the product in the middle, you'll see that it expands to a higher resolution, but is still undownloadable the easy way.
If your answer requires some programming or touching the code, I'm more than happy to hear it. If I have to learn something to do this, I will, so please write it anyway. Even though I'm writing this with having in mind that I'll have to program my solution, but I found this site more fitting than StackOverflow.
What I've tried and thought about:
Somehow intercepting the requests made to the site while, going through the highest-resolution images, but that seems incredibly convoluted. It'll take at least 3 days, which seems like a waste of time.
Turning off JS and then simply downloading the images. Sadly that lets me download only one and not in the highest resolution, which I need.
Thanks in advance for your help!