(function () {
    function getLastChild(el) {
        return (el.lastChild && el.lastChild.nodeName != '#text') ? getLastChild(el.lastChild) : el;
    }

    // should be our script tag
    var insertPosition = getLastChild(document.lastChild);
    
    $(document).ready(function () {
        // get widget via jsonp
        
        // target element should be create at insertPosition, i.e.
        $(insertPosition).after('<p>widget inserted here</p>');
    });
})();