$(document).ready(function(){

	var artImg = $("#articleImageId");
	var artId = artImg.attr('name').split(':')[3];

	// product image zoom lightbox
	$("#colorbox-zoom").colorbox({
		onOpen: function(){ 
			if (artImg!=null) {
				var artImgUrl2 = artImg.attr('name'); /* img without dynamically created flag overlay */
				if (artImgUrl2!=null) {
					artImgUrl2 = artImgUrl2.replace(/:/g, "/"); /* :dir:dir:image_2.jpg -> /dir/dir/image_2.jpg */
				} else {
					artImgUrl2 = artImg.attr('src'); /* default,  but img might be with dynamically created flag overlay */
				}
				var artImgUrl3 = artImgUrl2.replace(/(\d+)(\.[^.]+)$/,function(x,s,e){return (+s)+1+e;}); /* image_2.jpg -> image_3.jpg */
				/* check AJAX request on status code ==202 for _3 vs _2 img zoom level */
				$.ajax({
					url: artImgUrl3,
					type: 'GET',
					async: false,
					complete: function(xhr, txtStatus) {
						if (xhr.status == 200) {
							$("#colorbox-zoom").colorbox({href: artImgUrl3});
						} else {
							$("#colorbox-zoom").colorbox({href: artImgUrl2});
						}
					}
				});
			}
		}
	});			
});