docs: function (e, id, waypoint, cnt) {
  	cnt = cnt || 0;
  	if (e.id.indexOf(id) >= 0) {
  		return cnt;
  	}
  	else {
  		if (classie.has(e, waypoint)) {
  			++cnt;
  		}
  		return e.parentNode && getLevelDepth(e.parentNode, id, waypoint, cnt);
  	}
  }