function ps_refresh_line(id, url_)
{
    var url = url_;
    //'{$base_dir_ssl}cart.php?add&%extra%qty=%qty%&id_product={$product.id_product|intval}&ipa={$product.id_product_attribute|intval}&token={$token_cart}';
    var q1 = $('#p_'+id).val();
    var q2 = $('#po_'+id).val();
    var q = 0;
    q2 = parseInt(q2);
    if (q2 == NaN){
        return;
    }
    q = q1 - q2;
    if (q < 0){
        url = url.replace("%extra%", "op=down&" );
        q = Math.abs(q);
    }else{
        url = url.replace("%extra%", "" );
    }

    url = url.replace("%qty%", q );
    //alert(url);
    document.location.href= url;
}