issues with namespace in firefox

namespace-issue.js

    $(document).on('user.location', getUserLocation);

    $(document).on('user.location.check', checkLocation);
    $(document).trigger('user.location.check', checkLocation);

    function checkLocation()
    {
        $.get(userLocationUrl, function(result) {
            if (!$.isEmptyObject(result)) {
                $(document).off('user.location.check');
                return;
            }
            $(document).trigger('user.location');
        }, 'json');
    }

    function getUserLocation()
    {
        Location.get(function(position, error) {
            if (error) {
                return error.message; 
            }

            var params = {
                uf: position.uf,
                city: position.city,
                lat: position.coords.latitude,
                lng: position.coords.longitude
            };

            $.get(userLocationUrl, params, function(result) {
                if (!$.isEmptyObject(result)) {
                    window.location.reload();
                }
            }, 'json');
        });
    }