sub cgiapp_postrun {
    my ( $self, $outputref ) = @_;

    # the following conditionals protect us from trampling on
    # 'redirect' runmodes, or non-html output.
    if( $self->header_type eq 'header' ) {
        my %props = $self->header_props;
        if( !exists( $props{'-type'} ) or $props{'-type'} eq 'text/html' ) {

            my $t = $self->load_tmpl('master.tmpl');

            $t->param( runmode_content => $$outputref );
            $t->param( navbar_content  => $self->navbar_template );

            $$outputref = $t->output;

        }
    }
}