var shop = (function(){

    var urls = {
            data: '/url/to/shop/',
            buy: '/url/to/buy/script/'
        },
        selectors = {
            shop: 'div#shop',
            shopItem: '.thing'
        };

    function open(){
        var shopNode = $(selectors.shop);

        shopNode.load(getUrl('data'), function(response, status, xhr){

            // you can write here other logic, example: alert('ssup');

            // describe events
            shopNode.delegate(selectors.shopItem, 'click', buyItem);
        });
    }

    function buyItem(e){
        var itemNode = $(this),
            itemId = itemNode.attr('data-item-id');

        $.post(getUrl('buy'), {
                itemId: itemId
            })
            .success(function(data){
            // ok, all good
                    itemNode.remove();
                })
            .error(function(){
            // oops
                    alert('Error');
                });
    }

    function getUrl(urlName){
        return urls[urlName];
    }

    // provide public methods "api"
    return {
        open: open,
        getUrl: getUrl
    };
}());