Event.observe(window, 'load', function() {
										//   alert('onload');
			var loader = new Image();
			$$('.images a').each(function(img) {
				loader.src = img.href;
			});
			var overlays = [];
			// popup init
			var products = $$('.book-overlay');
			if(products.length > 0) overlays.push(new PrintsOverlay(products));

			AC.OverlayInit(overlays);
		});