How to Enable Desktop Notification in Gmail

Today google chrome released a new feature 'Chat & email notification' of Gmail for google chrome browser.
By enabling this we can get notification similar to gtalk notification, even we are working with other tabs or windows.
It is easy to enable or disable this feature .

Steps:
1) Go to settings on top right of gmail window.

2)Under general tab you will find Desktop notification , you can check / un-check depending upon ur requirement.

3) And Save the changes.

This feature will soon come up with other web browsers like firefox, IE, opera too.