     {
         super.partAdded(partName, instance);
  
-         if (instance == muteButton)
+        if (instance == muteButton)
         {
             if (dropDownController)
                 dropDownController.openButton = muteButton;

[Event(name="open", type="spark.events.DropDownEvent")]

/**
 *  Dispatched when the user presses the mute button control.
 *
 *  @eventType flash.events.MouseEvent
 *  
 *  @langversion 3.0
 *  @playerversion Flash 10
 *  @playerversion AIR 1.5
 *  @productversion Flex 4
 */
[Event(name="muteButtonClick", type="flash.events.MouseEvent")]

/**
 *  Open State of the DropDown component

import flash.ui.Mouse;

import mx.collections.IList;
import mx.core.IUIComponent;
import mx.core.UIComponent;
import mx.core.mx_internal;
import mx.events.CollectionEvent;
import mx.events.FlexEvent;
import mx.managers.LayoutManager;

import spark.components.supportClasses.ButtonBase;
import spark.components.supportClasses.DropDownController;
import spark.components.supportClasses.ListBase;
import spark.events.DropDownEvent;
import spark.events.VideoPlayerVolumeBarEvent;
import spark.primitives.supportClasses.TextGraphicElement;
import spark.utils.LabelUtil;

//--------------------------------------
//  Events
//--------------------------------------

/**
 *  Dispatched when the dropDown is dismissed for any reason such when 
