How to make facebook app authorization popup show

问题:

there is exactly what I saw. http://www.facebook.com/cocacola?sk=app_192765884109675 I don't know how they did it. I tried fb.ui change the display options. It always just give me a pop up window. so how to do the overlay?

Thanks in advance!

回答1:

Finally answer is: All you need ask authorization:

FB.ui({ method: "permissions.request" });

from: http://www.facebook.com/mypage?sk=app_1234567890
voila: you have popup in iframe.

However from:
http://apps.facebook.com/myapp
you will have popup without iframe