}, _getParentOffset: function () {
            this.offsetParent = this.helper.offsetParent();
            var a = this.offsetParent.offset();
            if (this.cssPosition == "absolute" && this.scrollParent[0] != document && d.ui.contains(this.scrollParent[0], this.offsetParent[0])) {
                a.left += this.scrollParent.scrollLeft();