It's not essential, but is recommended that a standards invoking DOCTYPE be added at the beginning of the page:
var imagesDataArray = [ //For demos, define a single set of images to be used in all of the demos below
src: 'images/Friends at the gate-72.jpg',
target: '_blank', // default is _self, which opens in the same window (_blank in new window)
description: 'Friends at the farm gate.'
description: 'Peter Lee Master Raku Potter.'
src: 'images/Sunrise ship at anchor-72.jpg',
description: 'Dawn; a ship at anchor in the bay', //<-- There should be no comma here
description: 'A Raku bowl.'
src: 'images/Passing an anchored ship-72.jpg',
description: 'Passing an anchored ship at Sunset', //<-- There should be no comma here
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="robots" content="noindex,nofollow"/>