--- js/image_nodes.js.old	2007-04-11 23:21:20.000000000 +0100
+++ js/image_nodes.js	2007-04-11 23:20:35.000000000 +0100
@@ -4,7 +4,7 @@
 function lightbox2_image_nodes() {
 	var nodes = document.getElementsByClassName("image");
 	for (var i = 0; i < nodes.length; i++) {
-		if (Element.hasClassName(nodes[i], "thumbnail")) {
+		if (Element.hasClassName(nodes[i], "image-thumbnail")) {
 			var parent = nodes[i].parentNode;
 			parent.rel = "lightbox[node_thumbnails]";
 			parent.href = nodes[i].src.replace(".thumbnail", "");