可以!如下java:
// JScript File
document.write('<object classid="clsid

27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="100%" height="100%" align="top">');
document.write(' <param name="movie" value="back.swf" />');
document.write(' <param name="quality" value="high" />');
document.write(' <

ARAM NAME="menu" VALUE="false" />');
document.write(' <param name="wmode" value="transparent" />');
document.write(' <param name="LOOP" value="false" />');
document.write(' <embed src="back.swf" width="100%" height="100%" loop="false" align="left" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" wmode="transparent"></embed>');
document.write('</object>');
当然了,不使用java也可以,只要添加个透明属性就可以了。不过不完美,在xp下会有“控件”提示。