我也碰到这样的问题，南方数据企业网站管理系统 V5.0是这样设置flash动画的，可以参考参考
<object classid="clsid27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="750" height="90">
<param name="movie" value="../image/head_top.swf">
<param name="quality" value="high">
<embed src="../image/head_top.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="750" height="90"wmode="transparent"></embed>
     <param name="wmode" value="transparent">
</object>