--- loncom/interface/lonhtmlcommon.pm	2007/10/10 00:02:19	1.167
+++ loncom/interface/lonhtmlcommon.pm	2007/11/02 23:41:01	1.168
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.167 2007/10/10 00:02:19 albertel Exp $
+# $Id: lonhtmlcommon.pm,v 1.168 2007/11/02 23:41:01 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -486,8 +486,8 @@ sub build_url {
     my ($base, $fields)=@_;
     my $url;
     $url = $base.'?';
-    foreach my $key(keys(%$fields)) {
-        $url.=$key.'='.$$fields{$key}.'&';
+    foreach my $key (keys(%$fields)) {
+        $url.=&escape($key).'='.&escape($$fields{$key}).'&';
     }
     $url =~ s/&$//;
     return $url;