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!
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!
Finally answer is: All you need ask authorization:
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