FB login callback function not responding if user is already logged in facebook

Question

I am using fb connect using js. This is my code:

Answer 1

This works:

FB.getLoginStatus(function(response) {
//only works when page loads, use FB.Event.subscribe for status change      
    statusChangeCallback(response);
    FB.Event.subscribe('auth.statusChange', function(response){
        //yay! do whatever here, there was a status change
    },true);  

});