// Refresh thumbnail gallery
function refreshThumbnailGallery(offset)
{
	// Build the AJAX request
	var qstr = Object.toQueryString({'align':align, 'rows':thumbRows, 'cols':thumbCols, 'offset':offset, 'gallery_id':galleryId});
	var url = "getthumbs.php?"+qstr;
	var ajax = new Ajax(url, {'method':'get', 'update':'thumb_gallery'});
	
	// Clear any existing thumbnails.
	$('thumb_gallery').innerHTML = "";
	
	// Add an event handler to each image in the gallery DIV to display the thumbnail's corresponding large image
	ajax.addEvent('onComplete', function(){
		$$('div#thumb_gallery .gallery_image').each(function(e){
			e.addEvent('click', function(){
				var id = e.getProperty('id').substr(6);
				$('image_descr').innerHTML = $('image_desc_'+id).innerHTML;
				$('display_image').src = e.getProperty('rel');
			});
		});
	});
	ajax.request();
}