docs: function () {
              var cfg = this._cfg, showLabel = (!cfg.hideLabel && !!cfg.label), idx;
              if (showLabel) {
                  idx = ((cfg.labelPos === "right" && !this._fullWidth) || cfg.labelPos === "bottom") ? 0 : 1;
              } else {
                  idx = 0;
              }
              var dom = this.getDom();
              if (this._isIE7OrLess) {
                  dom = dom ? dom.firstChild : null;
              }
              return ariaUtilsDom.getDomElementChild(dom, idx);
          }