Навигация - следующий предыдущий товар в карточке товара - [VM2&3] Дизайн, оформление

    <?php
    // Навигация по товарам
    if (VmConfig::get('product_navigation', 1)) {
    ?>
        <div class="product-neighbours">
        <?php
        if (!empty($this->product->neighbours ['previous'][0])) {
        $prev_link = JRoute::_('index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=' . $this->product->neighbours ['previous'][0] ['virtuemart_product_id'] . '&virtuemart_category_id=' . $this->product->virtuemart_category_id);
        echo JHTML::_('link', $prev_link, $this->product->neighbours ['previous'][0]
            ['product_name'], array('class' => 'previous-page'));
        }
        if (!empty($this->product->neighbours ['next'][0])) {
        $next_link = JRoute::_('index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=' . $this->product->neighbours ['next'][0] ['virtuemart_product_id'] . '&virtuemart_category_id=' . $this->product->virtuemart_category_id);
        echo JHTML::_('link', $next_link, $this->product->neighbours ['next'][0] ['product_name'], array('class' => 'next-page'));
        }
        ?>
        <div class="clear"></div>
        </div>
    <?php } // Навигация по товарам КОНЕЦ
    ?>