--- loncom/interface/lonnavmaps.pm	2006/02/24 23:19:54	1.364
+++ loncom/interface/lonnavmaps.pm	2006/03/02 19:45:22	1.365
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Navigate Maps Handler
 #
-# $Id: lonnavmaps.pm,v 1.364 2006/02/24 23:19:54 www Exp $
+# $Id: lonnavmaps.pm,v 1.365 2006/03/02 19:45:22 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -2756,7 +2756,7 @@ sub usedVersion {
 1;
 
 package Apache::lonnavmaps::iterator;
-use WeakRef;
+use Scalar::Util qw(weaken);
 use Apache::lonnet;
 
 =pod
@@ -3237,7 +3237,7 @@ sub populateStack {
 1;
 
 package Apache::lonnavmaps::DFSiterator;
-use WeakRef;
+use Scalar::Util qw(weaken);
 use Apache::lonnet;
 
 # Not documented in the perldoc: This is a simple iterator that just walks
@@ -3421,7 +3421,7 @@ sub populateStack {
 1;
 
 package Apache::lonnavmaps::resource;
-use WeakRef;
+use Scalar::Util qw(weaken);
 use Apache::lonnet;
 
 =pod