怎样将图片层提到最上？

http://games.qq.com/z/zt/wybizhi/mhsd/03.jpg这个应该要在最上方的，但为什么我把z-index:值设那么大还是在下层呢？怎样提到最上层？
<script>
<!--
/*15000为广告页面显示时间,15000毫秒为15秒 */ 
setTimeout("document.all.view.style.visibility = 'visible'","0");
setTimeout("document.all.view.style.visibility = 'hidden'","10000");
//-->
</script>
<div id=view  style="visibility: hidden;position:absolute; width:502px; height:430px; z-index:9999999999999999999999999999999999999999999999;">
<center><br><br><br><img src="http://games.qq.com/z/zt/wybizhi/mhsd/03.jpg" width="800" height="532" /></center>
</div>
<embedtype="application/x-shockwave-flash"src="http://player.youku.com/player.php/sid/XNjQ5MzEzNjg=/p/1.swf"id="movie_player"name="movie_player"bgcolor="#FFFFFF"quality="high"allowfullscreen="true"flashvars="isShowRelatedVideo=false&showAd=0&show_pre=1&show_next=1&isAutoPlay=false&isDebug=false&UserID=&winType=interior&playMovie=true&MMControl=false&MMout=false&RecordCode=1001,1002,1003,1004,1005,1006,2001,3001,3002,3003,3004,3005,3007,3008,9999"pluginspage="http://www.macromedia.com/go/getflashplayer"
width="500"
height="375"></embed>