为什么在vs2005里面调试可以停止播放flash，但是直接打开网页就不能停止播放呢？


//为什么在vs2005里面调试可以停止播放flash，但是直接打开网页就不能停止播放呢？
<body>
<center>
                
                <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="400" height="300" id="flash1"> 
                <param name="movie" value="488.swf"> 
                <param name="quality" value="high"> 
                <param name="fullscreen" value="true">
                <param name="scale" value="exactfit"> 
                <embed src="488.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="400" height="300"> 
                </embed> 
                </object>                 <br />
                <input id="Button9" type="button" value="button"  onclick="var movie = document.getElementById('flash1');
                                                                           if(movie) movie.rewind();"/>      
</center> 
</body>