Here i worked on "FlyoutAnchor" and creating the Menu(Drop Down) on Ribbon of MS CRM 2011.
It took more time and
finally found "Ribbon Workbench" tool and it is very easy to use.
We can directly import it into CRM solutions and use it.
It need silverlight to be installed..
You can download this solution from here Ribbon Workbench Tool..
Hope it will help the developers who are working on Ribbons and Button of MS CRM 2011