PHP Ajex mouse move popup box

I am looking for the PHP Ajex mouse move popup box.
It should show a small cool looking popup window when i move mouse on "Seller" link.

I saw this thing here:
Move the mouse on "Sellers" (next to the Star rating at the bottom of search product)
http://cameras.pricegrabber.com/digital/camera/p/48/form_keyword=camera/rd=1

Please let me know from where to get such Ajax popup window

 

I think you can do similar with css only.

 

That's definitely an ajax popup. If you try a css only approach, the page would need to contain hidden sections with the seller details.