title: Facebook like button popup gateway for facebook pages
body: <p>I was wondering how do they create the page on facebook with like button as a gateway to enter and browse through the page...</p>
  
  <p>Here is the one example....
  <a href="http://www.facebook.com/Diesel?sk=app_168523776552050" rel="nofollow">http://www.facebook.com/Diesel?sk=app_168523776552050</a></p>
  
  <p>I know how to create page in iframe and put in in facebook but I dont know how they show this popup and how do they show it for non fan visitors.</p>
  
  <p>Please enlighten me with your ideas and works.....</p>