(XenForo.Facebook.authResponse=b)&&!a.user_id?
XenForo._noSocialLogin||(XenForo.alert(XenForo.phrases.logging_in+"...","",8E3),setTimeout(function(){XenForo.redirect("index.php?register/facebook&t="+escape(b.accessToken)+"&redirect="+escape(g.location))},250)):!b&&a.user_id&&XenForo.Facebook.logout(null,!0)