code: function(e) {
          if (!e._handled && !this.minSlider._sliding && !this.maxSlider._sliding) {
              e._handled = true;
              this.selectActiveSlider(e);
              return YW.Slider.prototype.onMouseDown.call(this.activeSlider, e);
          } else {
              return false;
          }
      }
docs: Delegates the onMouseDown to the appropriate Slider
  
  @method _handleMouseDown
  @param e {Event} mouseup event
  @protected