I'm trying to make my sidebar show 3 images then scroll to the next 3 automatically every 3 seconds or so. (vertically)

Can anyone help me out with a reference I could look at how to do it or show a snippet of code?

I've looked up various scripts for scrolling the pictures I have on the right vertically, but I can't seem to implement any of the ones I've found. I'm not trying to ask for you to code it all for me (unless you really want to), but just need some help! Thanks!

Here's the site: