Squeezbox and Mootools help

Question

Hi

I have this piece of code. It works but the problem is the second instance of a function call is not working.

1. On Dom ready, we call a function.
2. When user submits a form, we open the squeezbox and then call this function to update a div.

here it fails. Help me fix this code.

window.addEvent('domready', function() {
    var container = 'miniK2StoreCart';
    if ($(container)) {
        doMiniCart();
    }

    SqueezeBox.initialize({});
    $$('.cart_form').each(function(el) {
        el.addEvent('submit', function(e) {
            new Event(e).stop();
            var quantity = this.quantity.value;
            //  var url = this.action+'&quantity='+quantity+'&Itemid='+this.Itemid.value;
            var url = this.action + '&quantity=' + quantity + '&Itemid=' + this.Itemid.value;
            SqueezeBox.fromElement(el, {
                url: url
            });

            //do the request only the minicart div is present
            if ($(container)) {
                doMiniCart();
            }

        });

    });

    function doMiniCart() {

        var murl = 'index.php?option=com_k2store&view=mycart&format=ajaxmini';

        var a = new Ajax(murl, {
            method: "post",
            onComplete: function(response) {
                $(container).setHTML(response);
                // (function() { document.body.removeChild($('tiendaModal')); }).delay(500);
            }
        }).request();
    }


});