docs: function() {
          var deactivated = false;
          if(OpenLayers.Handler.prototype.deactivate.apply(this, arguments)) {
              this.started = false;
              this.dragging = false;
              this.start = null;
              this.last = null;
              deactivated = true;
              OpenLayers.Element.removeClass(
                  this.map.viewPortDiv, "olDragDown"
              );
          }
          return deactivated;
      }