-a class="q4" about="_blank" href="http://www.wowhead.com/?item=33283"-Item Name-/a-
Where q0=poor, q1=common and so on.
Mind you, you have to have it enabled for mouseover pop-up to make it work as a mouseover, which is to put
-script src="http://www.wowhead.com/widgets/power.js"- -/script-
into your banner area.
(all -'s are html brackets)