HTML component click event dispatch

NaverRadio.mxml

<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adobe.com/flex/spark"
    xmlns:mx="library://ns.adobe.com/flex/mx"
    width="400" height="364" 
    showStatusBar="false"
    creationComplete="onCreationCompleteApp()">
	
    <fx:Script>
    <![CDATA[
    /** contextMenu */
    private var _contextMenu:RadioContextMenu;
			
    /** html document */
    private var _document:Object;
			
    /**
     * add creation complete handler
     */
    private function onCreationCompleteApp():void
    {
        // tray 설정 후에.. 
        _contextMenu.addEventListener( DataEvent.DATA, onDataContextMenu );
				
        html.addEventListener( Event.COMPLETE, onCompleteHTML );
    }
			
    /**
     * html complete handler
     */
    private function onCompleteHTML( event:Event ):void
    {
        // set document
        _document = html.htmlLoader.window.document;
    }
			
    /**
     * 클릭 이벤트 발생
     */
    private function dispatchClickEvent( className:String ):void
    {
        if ( _document )
        {
            var target:Object;
					
            target = _document.getElementsByClassName( className )[0];
					
            if ( target )
            {
                var event:Object;
						
                event = _document.createEvent( "MouseEvent" );
                event.initMouseEvent( "click", true, true, "window" );
						
                target.dispatchEvent( event );
            }
        }
    }
		
    /**
     * context menu select
     */
    private function onDataContextMenu( event:DataEvent ):void
    {
        switch ( event.data )
        {
            case "[열기 메뉴 선택시]":
                activate();
                break;
            case "[다음곡 메뉴 선택시]":
                dispatchClickEvent( "[다음곡 버튼 클래스 명]" );
                break;
            case "[좋아요 메뉴 선택시]":
                dispatchClickEvent( "[좋아요 버튼 클래스 명]" );
                break;
            case "[싫어요 메뉴 선택시]":
                dispatchClickEvent( "[싫어요 버튼 클래스 명]" );
                break;
            case "[닫기 메뉴 선택시]":
                exit();
                break;
        }
    }
    ]]>
    </fx:Script>
	
    <mx:HTML id="html" width="100%" height="100%" horizontalScrollPolicy="off"
        verticalScrollPolicy="off">
    </mx:HTML>
    
</s:WindowedApplication>