my $vnav_template = [];
    push @{ $vnav_template }, main::get_template_bn('vnav_head');
    push @{ $vnav_template }, main::get_template_bn('vnav_item');
    push @{ $vnav_template }, main::get_template_bn('vnav_foot');
    my $hnav_template = [];
    push @{ $hnav_template }, main::get_template_bn('hnav_head');
    push @{ $hnav_template }, main::get_template_bn('hnav_item');
    push @{ $hnav_template }, main::get_template_bn('hnav_foot');