Safari - Icons in bookmark toolbar ???

On the Chrome bookmark toolbar, I can delete all of the text and just have an icon representing the link. I find this to be much quicker and easier to see. I cannot figure out how to get Safari to do this. Is there a plugin available?


In the image below, I would like ti replace "TWIT" with the Twit icon.... "FaceBook" with the FaceBook Icon

Any suggestions?

THanks
Monty