--- loncom/homework/structuretags.pm	2009/12/07 11:46:33	1.463
+++ loncom/homework/structuretags.pm	2010/02/10 20:17:44	1.464
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # definition of tags that give a structure to a document
 #
-# $Id: structuretags.pm,v 1.463 2009/12/07 11:46:33 foxr Exp $
+# $Id: structuretags.pm,v 1.464 2010/02/10 20:17:44 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -275,6 +275,7 @@ sub page_start {
 	$form_tag_start='<form name="lonhomework" enctype="multipart/form-data" method="post" action="';
 	my $uri = Apache::loncommon::inhibit_menu_check(
                 &Apache::lonenc::check_encrypt($env{'request.uri'}));
+        $uri = &HTML::Entities::encode($uri,'<>&"');
 	$form_tag_start.=$uri.'" ';
 	if ($target eq 'edit') {
 	    $form_tag_start.=&Apache::edit::form_change_detection();