Rotate four random images from a folder simultaneously in different and randomly div

I have eight div with inside four little pictures. I need to rotate simultaneously all four images into an a specific random div and show another four picures. I'd like to see, with timeout, random div that flip and change its four picure. All picures I need to show random but not the same into a div. I'd like to set a folder where I can save and call the pictures.

It's possibile? Many thanks