window.addEvent('load', function(){
	$$('#gallery li a img').each(function(el){
		var anchor_height = el.getParent().getStyle('height').toInt();
		var img_height = el.getStyle('height').toInt();
		if (img_height < anchor_height){
			var difference = (anchor_height/2) - (img_height/2);
			el.setStyles({
				'position': 'relative',
				'top': difference
			});
		}
	});
});