Add-on View first Image while Thread Hovering


Active member
Hi I want to create a Craigslist like category. I would like to have the first image posted in the thread to appear when hovering without having to click and open up ad.

Also I would like to replace the Avatar with the first image.

The first seems awfully easy does anyone know how to do this or know of an Add-on that will do this?

A bit like the way ebay listings appear.