( function( $ ) {

	/** Document Ready */
	$( document ).ready( function() {

		$( document ).keydown( function( e ) {

			var url = false;

			if ( e.which === 37 ) {  // Left arrow key code
				url = $( '.previous-image a' ).attr( 'href' );
			}

			else if ( e.which === 39 ) {  // Right arrow key code
				url = $( '.entry-attachment a' ).attr( 'href' );
			}

			if ( url && ( !$( 'textarea, input' ).is( ':focus' ) ) ) {
				window.location = url;
			}

		} );

	} );

} )( jQuery );
