How to do multiple login on Gmail

Generally people create to e-mail accounts,one for their personal work
and another for Official work.In this situation one can not login to both
accounts simultaneously from one browser.But this can be done with the
help of a special feature of Google.In this post i am going to tell you how
 you can login to more than one accounts at a time.



Instructions
1.Sign in to your Google account.
2.Now go to the link given below:
 www.google.com/accounts/b/0/MultipleSessions
3.There will be written as 'Sign in to Multiple Google Account'.
4.Check the On button,tick all the options and save the settings.
5.Now go to your Gmail account on which you have changes the settings.
6.At the right top of the window you can see your email address.
7.Click on it and than click on Switch Account option and than click 
    on sign in to another account.
8.Than you will get a new Sign in window.
9.Now you can sign in to your another Gmail account.