Cart page onPageLoaded early firing

Cart page onPageLoaded early firing

HTML

<div>
    <script type="text/javascript" src="http://app.ecwid.com/script.js?1003" charset="utf-8"></script>
    <script type="text/javascript">
        xProductBrowser("categoriesPerRow=3", "views=grid(3,3) list(10) table(20)", "categoryView=grid", "searchView=list");
    </script>
</div>

JavaScript

if (typeof (Ecwid) === 'object') {
    Ecwid.OnPageLoaded.add(function (page) {
        if (page.type == 'CART') {            
            jQuery('#ecwid-checkoutOptionsPanel').hide();
            alert('1');
        }
    });
}