docs: function () {
              this._draggable = new ariaUtilsDragdropDrag(this._slider, {
                  handle : this._slider,
                  proxy : null,
                  axis : "x",
                  constrainTo : this._sliderContainer
              });
              this._draggable.$on({
                  "dragstart" : {
                      fn : this._onDragStart,
                      scope : this
                  },
                  "move" : {
                      fn : this._onDragMove,
                      scope : this
                  },
                  "dragend" : {
                      fn : this._onDragEnd,
                      scope : this
                  }
              });
          }