--- loncom/homework/imageresponse.pm	2004/03/08 23:23:04	1.51
+++ loncom/homework/imageresponse.pm	2004/05/27 04:32:19	1.53
@@ -2,7 +2,7 @@
 # The LearningOnline Network with CAPA
 # image click response style
 #
-# $Id: imageresponse.pm,v 1.51 2004/03/08 23:23:04 albertel Exp $
+# $Id: imageresponse.pm,v 1.53 2004/05/27 04:32:19 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -75,7 +75,7 @@ sub end_imageresponse {
 sub start_foilgroup {
     %Apache::response::foilgroup=();
     $Apache::imageresponse::conceptgroup=0;
-    &Apache::response::setrandomnumber();
+    &Apache::response::pushrandomnumber();
     return '';
 }
 
@@ -296,6 +296,7 @@ sub end_foilgroup {
     } elsif ($target eq 'edit') {
 	$result=&Apache::edit::end_table();
     }
+    &Apache::response::poprandomnumber();
     return $result;
 }
 
@@ -341,6 +342,7 @@ sub start_foil {
 	if (defined($Apache::response::foilnames{$name})) {
 	    &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
 	}
+	$Apache::response::foilnames{$name}++;
 	if ( $Apache::imageresponse::conceptgroup
 	     && !&Apache::response::showallfoils()) {
 	    push(@{ $Apache::response::conceptgroup{'names'} }, $name);