  	 *  @playerversion AIR 1.5
  	 *  @productversion Flex 4
  	 */ 
-    protected function buttonDownHandler(event:Event):void
-    {
+    protected function button_buttonDownHandler(event:Event):void
+    {
+    	//trace("DDL.button_buttonDownHandler");
         if (isOpen)
             closeDropDown(true);
         else

 
 		if (instance == button)
    	{
    		button.addEventListener(FlexEvent.BUTTON_DOWN, buttonDownHandler);
    		button.enabled = enabled;
    	}
    }

import flash.ui.Keyboard;

import mx.collections.IList;
import mx.core.mx_internal;
import mx.events.CollectionEvent;
import mx.events.DropdownEvent;
import mx.events.FlexEvent;
