https://www.facebook.com/dialog/pagetab?app_id=YOUR_APP_ID&next=YOUR_URL
Replace “YOUR_APP_ID” with your App ID and “YOUR_URL” with your App’s Canvas URL
Reference:
http://developers.facebook.com/docs/appsonfacebook/pagetabs/
https://www.facebook.com/dialog/pagetab?app_id=YOUR_APP_ID&next=YOUR_URL
Replace “YOUR_APP_ID” with your App ID and “YOUR_URL” with your App’s Canvas URL
Reference:
http://developers.facebook.com/docs/appsonfacebook/pagetabs/