Dreamweaver 中添加的Flash视频文件，如何让其在最底层显示

我在Dreamweaver中利用软件自带的工具添加了一个.flv护展名的文件，我本来自己的网页当中有个浮动框，现在的问题就是说这个刚添加的视频会挡住浮动框，请问下如何让添加的视频在最底层呢？求教？谢谢！
      <script type="text/javascript">
AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0','width','315','height','202','id','FLVPlayer','src','FLVPlayer_Progressive','flashvars','&MM_ComponentVersion=1&skinName=Clear_Skin_1&streamName=images/biyan&autoPlay=false&autoRewind=false','quality','high','scale','noscale','name','FLVPlayer','salign','lt','pluginspage','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash','movie','FLVPlayer_Progressive' ); //end AC code
</script><noscript><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0" width="315" height="202" id="FLVPlayer">
        <param name="movie" value="FLVPlayer_Progressive.swf" />
        <param name="salign" value="lt" />
        <param name="quality" value="high" />
        <param name="scale" value="noscale" />
        <param name="FlashVars" value="&MM_ComponentVersion=1&skinName=Clear_Skin_1&streamName=images/biyan&autoPlay=false&autoRewind=false" />
        <embed src="FLVPlayer_Progressive.swf" flashvars="&MM_ComponentVersion=1&skinName=Clear_Skin_1&streamName=images/biyan&autoPlay=false&autoRewind=false" quality="high" scale="noscale" width="315" height="202" name="FLVPlayer" salign="LT" type="application/x-shockwave-flash" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" />      
</object>
    </noscript>