I used Gmail as communication tool and Facebook to know my friend recently status .It’s so trouble exchange tab in Firefox showing Gmail and Facebook web page.Now i already integrate Facebook into Gmail,as i read email also can know my Facebook’s friend status at same time.You can try this method if having this problem.
Login Gmail account and click ‘Setting’ > ‘Lab’.
Then select ‘Add any gadget by URL’ to ‘Enable’ it and remember to click ‘Save Changes’.
Select ‘Gadget’ tab in setting menu,enter in
http://hosting.gmodules.com/ig/gadgets/file/104971404861070329537/facebook.xml ,click ‘Add’.
Now you will notice that a Facebook gadget added.
A Facebook icon also added into Gmail sidebar.
Click the Facebook icon and log in with your Facebook username and password,allow the gadget access your Facebook account,then your Facebook friend status will appear in Gmail.