                  toggleFullscreen();
                    break;
                case 't':
                case 'T':
                    e.preventDefault();
                    toggleThumbnails();
                    break;
                case 'h':
                case 'H':
                    e.preventDefault();
                    toggleKeyboardHints();
                    break;
                case 'c':
                case 'C':
                    e.preventDefault();
                    toggleCacheSta