--- a/implementation.js	Mon May 30 14:31:34 2011 -0600
+++ b/implementation.js	Mon May 30 14:42:15 2011 -0600
@@ -325,7 +325,7 @@
 
 	var stop = range.endContainer;
 	if (stop.hasChildNodes()
-	&& range.endOffset < node.childNodes.length) {
+	&& range.endOffset < stop.childNodes.length) {
 		// The node after the last contained node is a child
 		stop = stop.childNodes[range.endOffset];
 	} else {