Image vs Forum name

[rds_correia]

Hi there ,
I'd like to remove the forum name from the top of the page and have an image instead.
I've found the settings to do it.
But my problem is that I'd like to keep the forum name in the internet browser tabs (for instance firefox).
When I put an image instead of the forum name I loose the forum name from the tab.
I just see -Index- .
Can someone help me?
Cheers