vb4 - Return to Top in each post

[Reedly]

There was a modification that added a 'return to top' image link into every post within a thread for the older versions of vbulletin. I've searched for a new one but can't seem to find one.

There is already a 'top' button at the very bottom of the page in vb4, but I would like to simply put that button on each post so users can return to the top of the page from any point.

Could someone tell me how to do this? (Or if you know of a modification that exists for vb4?)

Thank you!!