ker view layout. The layout is persisted
				 * in local storage.
				 */
				function setLayout( value ) {

					var title = SPEAKER_LAYOUTS[ value ];

					layoutLabel.innerHTML = 'Layout' + ( title ? ( ': ' + title ) : '' );
					layoutDropdown.value = value;

					document.body.setAttribute( 'data-speaker-layout', value );

					// Persist locally
					if( window.localStorage ) {
						window.localStorage.setItem( 'reveal-speaker-layout', value );
					}

				}

				/**
				 * Returns the ID of the most