I create a new button in ribbon If i click that button ,i need to open the "Send Direct mail" look up form.How to open the following lookup form using javascript in crm 2011 when the button is clicked.

I create a new button in ribbon If i click that button ,i need to open the "Send Direct mail" look up form.How to open the following lookup form using javascript in crm 2011 when the button is clicked.
