<reference name="head">
<action method="addItem">
<type>js</type><script>404error.js</script>
</action>
</reference>
add_filter('pre_get_posts','better_editions_archive');
function better_editions_archive( $query ) {
if ( $query->is_main_query() && $wp_query->is_category( ) ) {
$query->set( 'tax_query', array(
'relation' => 'OR',
array(
'taxonomy' => 'category',
'field' => 'id',
'terms' => $terms,
'operator' => 'NOT IN'
)
) );
}
return $query;
}