function quick_view()
{
    $(document).on('click', '.quick-view:visible, .quick-view-mobile:visible', function(e)
    {
        e.preventDefault();
        var url = this.rel;
        if (url.indexOf('?') != -1)
            url += '&';
        else
            url += '?';

        if (!!$.prototype.fancybox)
            $.fancybox({
                'padding':  0,
                'width':    1087,
                'height':   610,
                'type':     'iframe',
                'href':     url + 'content_only=1'
            });
    });
}

function quick_view()
{
    $('.quick-view').fancybox();
}

<a class="quick-view" href="{$product.link|escape:'html':'UTF-8'}" rel="{$product.link|escape:'html':'UTF-8'}">
    <span>{l s='Quick view'}</span>
</a>

<a class="quick-view" href="{$link->getImageLink($product.link_rewrite, $product.id_image, 'large_default')|escape:'html':'UTF-8'}">
    <span>{l s='Quick view'}</span>
</a>