Please check this screenshot
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First of all modal div design is completely unprofessinal
Fi
If you pay attention to it, that contains two buttons in modal div
Login : This will open facebook login window
register : This will open facebook register window
In case user is already facebook login, then no need to show the modal window and show the user's attribute. Like
Email
First Name
Last Name
Address
Friends list with Photo
Image
Age
Birthday
Country
City
State
These facebook properties should also appear in the modal div as shown on same page