Tooltip doesn't recognize multiple monitors

[cali]

There's a problem when a tooltip is too close to the edge of the screen, and there's another monitor right next to it. The tooltip is shown in both screens, but because of the moitors' frames, it's difficult to read.

Here's a screenshot of the problem:

[rusty]

Thanks. Tracked at:
http://www.ventismedia.com/mantis/view.php?id=5678

-Rusty