<div style="width:100px; height:100px; overflow:hidden">
   <embed src="http://www.Metacafe.com/fplayer/4133817/world_breakdancing.swf" width="400"  height="345" wmode="transparent" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" allowFullScreen="true" allowScriptAccess="always" name="Metacafe_4133817"></embed>
</div>

请注意,wmode =“ transparent”非常重要！