The problem is comming from an old version of the app where you was able to manage the brightness of the screen from the default browser menu.
As this option is no more reachable, but values still used to define the brightness when you browse, there only one possibility. I've tried on my S3 et works great.
From the homescreen of your phone:
1) Menu -> Settings -> Application
2) Select "All" tab
3) Search for Internet and tap on
4) Tap "Force stop"(Saying OK to the warning)
5) Tap "Clear data"
Then you're set
You can go back with the Home button or tapping multiple times the back button (right one)
I hope this will work for you.