I would love to. But I can not find a way to fix it in both Chrome and Firefox, I honestly care less for Internet explorer. It is also important that the images generated are correct afterwards.
Your fix makes it fine in Chrome but even worse in Firefox. I tried to change the padding on the "tabs" (li with id ps_tab_*) myself, from 4 and 2 px in bottom to 5 and 3, didn't work to great either.
I have a slight memory of trying to fix this before, but I assume I gave up and left it with the best solution I could find.