The attached screenshot is from OS X/Firefox 3. Note that the center tab (an image) has a dotted line around it, apparently because it was the most-recently selected tab. Is there a way I can eliminate this dotted line in CSS or JavaScript? (Hmmm...the free image hosting service has reduced the size of the image. But if you could see it, you'd notice a dotted-line select area around the block.)

[Screen Shot http://www.freeimagehosting.net/uploads/th.fadf78173b.png](http://www.freeimagehosting.net/uploads/th.fadf78173b.png)