code: function(e, oSelf) {
      var elTarget = Ev.getTarget(e);
      oSelf.fireEvent("dropdownChangeEvent", {event:e, target:elTarget});
  }
docs: Handles change events on SELECT elements within DataTable.
  
  @method _onDropdownChange
  @param e {HTMLEvent} The change event.
  @param oSelf {YAHOO.wiget.DataTable} DataTable instance.
  @private