--- loncom/homework/outputtags.pm	2001/01/11 19:21:53	1.4
+++ loncom/homework/outputtags.pm	2001/08/06 20:33:23	1.10
@@ -9,14 +9,12 @@ sub BEGIN {
 }
 
 sub start_displayduedate {
-  my ($target,$token,$parstack,$parser,$safeeval)=@_;
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $result;
   my $status=$Apache::inputtags::status['-1'];
   &Apache::lonxml::debug("got a $status in duedatebox");
   if (($status =~ /CAN.*_ANSWER/) && ($target eq 'web')) {
-    my $args ='';
-    if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
-    my $format = &Apache::run::run("{$args;".'return $format}',$safeeval);
+    my $format = &Apache::lonxml::get_param('format',$parstack,$safeeval);
     if ($format eq '') {
       &Apache::lonxml::debug("using default format");
       $format="%c";
@@ -24,18 +22,23 @@ sub start_displayduedate {
     my $id = $Apache::inputtags::part;
     my $date = &Apache::lonnet::EXT("resource.$id.duedate");
     &Apache::lonxml::debug("duedatebox found $date for $id");
-    $result ='<table border="on"><tr><td>Due at '.
-      POSIX::strftime($format,localtime($date)).
-	'</td></tr></table>';
+    if ($date) {
+       $result ='<table border="on"><tr><td>Due at '.
+         POSIX::strftime($format,localtime($date)).
+	   '</td></tr></table>';
+    } else {
+      $result ='<table border="on"><tr><td>No due date set.</td></tr></table>';
+    }
   }
   return $result;
 }
 
 sub end_displayduedate {
+  return '';
 }
 
 sub start_displaytitle {
-  my ($target,$token,$parstack,$parser,$safeeval)=@_;
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
   my $result='';
   if ($target eq 'web') {
     $result="<h1>$Apache::lonhomework::name</h1>";
@@ -44,6 +47,7 @@ sub start_displaytitle {
 }
 
 sub end_displaytitle {
+  return '';
 }
 
 1;