code: function ( key, value ) {
              YAHOO.log("Firing Config event: " + key + "=" + value, "info", "Config");
              var property = this.config[key];
          
              if (property && property.event) {
                  property.event.fire(value);
              } 
          }
docs: Fires a configuration property event using the specified value.
  @method fireEvent
  @private
  @param {String} key The configuration property's name
  @param {value} Object The value of the correct type for the property