for (var i = 0; i < hs.overlays.length; i++) {
                var o = hs.overlays[i], tId = o.thumbnailId, sg = o.slideshowGroup;
                if ((!tId && !sg) || (tId && tId == this.thumbsUserSetId)
                    || (sg && sg === this.slideshowGroup)) {
                    this.createOverlay(o);