--- loncom/homework/edit.pm	2007/09/07 00:39:21	1.110
+++ loncom/homework/edit.pm	2007/09/10 23:00:05	1.111
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # edit mode helpers
 #
-# $Id: edit.pm,v 1.110 2007/09/07 00:39:21 albertel Exp $
+# $Id: edit.pm,v 1.111 2007/09/10 23:00:05 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -672,6 +672,10 @@ sub get_new_args {
 		$token->[2]->{$arg}=$newvalue;
 	    }
 	    $rebuild=1;
+	    # add new attributes to the of the attribute seq
+	    if (!grep { $arg eq $_ } (@{ $token->[3] })) {
+		push(@{ $token->[3] },$arg);
+	    }
 	} elsif (!defined($newvalue) && defined($value)) {
 	    delete($token->[2]->{$arg});
 	    $rebuild=1;
@@ -688,6 +692,7 @@ sub rebuild_tag {
 	$result = '<'.$token->[1];
 	foreach my $attribute (@{ $token->[3] }) {
 	    my $value = $token->[2]{$attribute};
+	    next if ($value eq '');
 	    $value =~s/^\s+|\s+$//g;
 	    $value =~s/\"//g;
 	    &Apache::lonxml::debug("setting :$attribute: to  :$value:");