offsetParent: function() {
        return this.map(function() {
            var offsetParent = this.offsetParent || document.body;
            while ( offsetParent && (!/^body|html$/i.test(offsetParent.nodeName) && jQuery.css(offsetParent, "position") === "static") ) {
                offsetParent = offsetParent.offsetParent;
            }
            return offsetParent;
        });
    }
});