function avc_get_filters($filter_id, $articles)
{
    global $FILTERS;
    $ret = array();
    foreach ($FILTERS[$filter_id] as $filter) {
        $ret[] = get_filter_values($filter, $articles);
    }
    return $ret;
}
        <li><?php 
        echo $label;
        ?>
</li>
      <?php 
    }
    ?>
    </ul>
    
    
    <?php 
    // Prepare articles and filters
    $articles = get_posts_from_category($SPECIAL_CATEGORIES[$page], -1);
    $filters = array();
    foreach ($FILTERS[$page] as $filter) {
        $filters[] = get_filter_values($filter, $articles);
    }
    ?>
    
    <div id="selects">
      <?php 
    // Display the select boxes
    foreach ($FILTERS_LABELS2[$page] as $index => $select) {
        ?>
          <label class="select"> 
            <select class="option-set" data-filter-group="<?php 
        echo $FILTERS[$page][$index];
        ?>
">
              <option selected data-filter-value=""><?php 
        echo $select;