code: function (element) {
              var position = this.calculatePosition(element);
              return {
                  x : position.left + element.clientLeft,
                  y : position.top + element.clientTop,
                  width : element.clientWidth,
                  height : element.clientHeight
              };
          }
docs: Get the client geometry of an element. It means the coordinates of the top/left corner and the width and
  height of the area inside the element which can be used by its child elements. Returned value is relative to
  the current viewport.
  @param {HTMLElement} element Element whose client geometry is requested.
  @return {aria.utils.DomBeans:Geometry} Geometry object