I am using 1.3.9h.

I am trying to add an add to cart box/button on every featured product on the main page.

I tried to add

$add_code .='. <a href="' . zen_href_link($_GET['main_page'], zen_get_all_get_params(array('action')) . 'action=buy_now&products_id=' . $featured_products->fields['products_id']) . '">' . '<img src="my image link" />' . '</a>';

It doesn't work.

How can I add an add to cart box/button on every featured product on the main page?

Please help.