var images = document.getElementsByTagName('img');

for (i = 0; i < images.length; i++) {
	if (images[i].className != 'lightbox') {
		continue;
	}

	var link = document.createElement('a');
	link.href = images[i].src.replace('.thumbnail', '');
	link.rel = 'gb_imageset[detail]';
	link.title = images[i].title;
	link.appendChild(images[i].cloneNode(true));

	images[i].parentNode.replaceChild(link, images[i]);
}