我的代码在让我的三个SWF横幅旋转时遇到问题，目前它只是在每个页面刷新时显示一个横幅，我希望它在页面上一个接一个地浏览所有三个SWF横幅。
以下当前代码：
<script language="javascript">
files = new Array();
files[0] = "https://f88a4ec1239322f1b0543150463705209caf87a8.googledrive.com/host/0BzJtTNkbexMAcU9STWNpU2dQX1E/CS_0814_VG_Sky.swf";
files[1] = "https://f88a4ec1239322f1b0543150463705209caf87a8.googledrive.com/host/0BzJtTNkbexMAcU9STWNpU2dQX1E/NMM_SCS_0814_VG_Sky.swf";
files[2] = "https://f88a4ec1239322f1b0543150463705209caf87a8.googledrive.com/host/0BzJtTNkbexMAcU9STWNpU2dQX1E/QH_tea_banner_v5.swf";
index = Math.floor(Math.random() * files.length);
movie = files[index];
document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0" width=225 height=600>');
document.write('<param name=movie value="' + movie + '"> <param name=quality value=high> <param name=bgcolor value=#ffffff> <param name="menu" value="false">');
document.write('<embed src="' + movie + '" quality=high menu=false width=225 height=600 type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash"></embed>');
document.write('</object>');
</script>
任何帮助都会很棒，谢谢！