docs: function () {
          if(u.isIE8 || u.isIE9){
              this._screenSizeMediaQuery = {};
              var w = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth; 
              if(w > 1024)
                  this._screenSizeMediaQuery.matches = false;
              else
                  this._screenSizeMediaQuery.matches = true;
          }
          if (this._screenSizeMediaQuery.matches) {
              u.addClass(this.element, this._CssClasses.IS_SMALL_SCREEN);
          } else {
              u.removeClass(this.element, this._CssClasses.IS_SMALL_SCREEN);
              // Collapse drawer (if any) when moving to a large screen size.
              if (this._drawer) {
                  u.removeClass(this._drawer, this._CssClasses.IS_DRAWER_OPEN);
                  u.removeClass(this._obfuscator, this._CssClasses.IS_DRAWER_OPEN);
              }
          }
      }