Facebook competition accessibility from liking of profile.

scripts.js

(function(){
    window.fbAsyncInit = function() {
        FB.init({
            appId      : '8547685675671896', // App ID
            // channelUrl : 'http(s)://yourdomain.com/channel.html', // Channel File
            status     : true, // check login status
            cookie     : true, // enable cookies to allow the server to access the session
            xfbml      : true  // parse XFBML
        });

        FB.login(function(response) {
            if (response.status == 'connected') {
                var user_id = response.authResponse.userID;
                var page_id = "161456546118193";
                var fql_query = "SELECT uid FROM page_fan WHERE page_id=" + page_id + " and uid=" + user_id;

                var like_screen = $('.likeScreen'),
                    contest_screen = $('.contestScreen');

                var keepGoing = true,
                    t;

                function loop() {
                    FB.api('/me/likes/'+page_id, function(response) {
                        if (response.data[0]) {
                            like_screen.css('display','none');
                            contest_screen.fadeIn(300);
                            clearTimeout(t);
                        } else {
                            contest_screen.css('display','none');
                            like_screen.fadeIn(300);
                        }
                    });
                    if (keepGoing) {
                        setTimeout(loop, 1000);
                    }
                }
                function startLoop() {
                    loop();
                }
                startLoop();
            } else {
                // user is not logged in
            }
        });
    };
}).call(this);