网页中flash背景透明
<embed src="文件路径" width="长度" height="宽度" quality="high" type="application/x-shockwave-flash" wmode="transparent">
</embed>
<embed src="文件路径" width="长度" height="宽度" quality="high" type="application/x-shockwave-flash" wmode="transparent">
</embed>