flash 透明代码:
<param name="wmode" value="transparent"> 或 wmode="transparent"
根据代码在网页flash代码中加入红色部分.

object代码:
<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="725" height="62">
      <param name="movie" value="i/menu.swf">
      <param name="quality" value="high">
      <param name="wmode" value="transparent">
      <embed src="i/menu.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="725" height="62"></embed>
    </object>

EMBED代码:
<EMBED src="http://ntc.com.cn/snow.swf" width"=500" height="300" type="application/octet-stream" quality="high" wmode="transparent">