_findNextTabStop: function(parentElement, ev, callback, direction) {
                    var _currentIndex, _direction, _tabIndexes, _tabIndexesArray, _maxIndex, _minIndex, _looked, _tabIndex, _delta, _element, _audioPlayersCount;
                    _maxIndex = _minIndex = 0;
                    _direction = direction || 1;
                    _element = ev.target;