Hello again,
Since i didn't get any answer about this issue, and since I have some urgency to solve this problem, I've been testing when this problems occurs and witch browsers and OS affects.
So, in windows everything works just great, but in Mac OS X version 10.8.2 the top bar seems to have some problems. This problem only occurs in chrome and safari, but in Firefox it works just fine.
The problem remains the same: the top bar, when you scroll down and up, doesn't stick to it´s original position, as you can see in the image above.
Can you help me?
Thanks.