 import spark.components.supportClasses.ButtonBase;
 import spark.components.supportClasses.DropDownController;
 import spark.components.supportClasses.TextBase;
-import spark.events.IndexChangeEvent;
 import spark.core.NavigationUnit;
 import spark.events.DropDownEvent;
+import spark.events.IndexChangeEvent;
 import spark.utils.LabelUtil;
-import flash.accessibility.Accessibility;
 
 use namespace mx_internal;
 

    /**
     *  @private
     */
    private var _userProposedSelectedIndex:Number = -1;
    
    /**
     *  @private

package spark.components
{

import flash.accessibility.Accessibility;
import flash.display.DisplayObject;
import flash.events.Event;
import flash.events.FocusEvent;
