SWFObject是简单易用的Flash嵌入和检测JS代码，个人觉得比Adobe官方提供要更为方便，也更为易用的。这次版本更新改动非常大。
SWFObject2.0现提供两个主要调用方法。
1.swfobject.registerObject(flashContentId, flashVersion,expressInstallUrl
);
flashContentId为Flash的ID；
flashVersion为播放SWF的Player版本；
expressInstallUrl为Flash Player更新安装的swf调用地址；如果当前版本低于flashVersion将自动更新。
代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>SWFObject v2.0 sample page</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<script type="text/javascript" src="swfobject.js"></script>
<script type="text/javascript">
swfobject.registerObject("myId", "9.0.0", "expressInstall.swf");
</script>
</head>
<body>
<div>
<object id="myId" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="300" height="120">
<param name="movie" value="test.swf" />
<!--[if !IE]>-->
<object type="application/x-shockwave-flash" data="test.swf" width="300" height="120">
<!--<![endif]-->
<div>
<h1>Alternative content</h1>
<p><a href="http://www.adobe.com/go/getflashplayer"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" /></a></p>
</div>
<!--[if !IE]>-->
</object>
<!--<![endif]-->
</object>
</div>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>SWFObject v2.0 sample page</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<script type="text/javascript" src="swfobject.js"></script>
<script type="text/javascript">
swfobject.registerObject("myId", "9.0.0", "expressInstall.swf");
</script>
</head>
<body>
<div>
<object id="myId" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="300" height="120">
<param name="movie" value="test.swf" />
<!--[if !IE]>-->
<object type="application/x-shockwave-flash" data="test.swf" width="300" height="120">
<!--<![endif]-->
<div>
<h1>Alternative content</h1>
<p><a href="http://www.adobe.com/go/getflashplayer"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" /></a></p>
</div>
<!--[if !IE]>-->
</object>
<!--<![endif]-->
</object>
</div>
</body>
</html>
2.swfobject.embedSWF(swfUrl, replaceElementId, swfWidth, swfHeight, flashVersion,expressInstallUrl, flashvars, params, attributes);
swfUrl为调用swf的地址；
replaceElementId为要用于替换成flash的可显示容器的ID；
swfWidth为swf的宽度；
swfHeight为swf的高度；
flashVersion为播放SWF的Player版本；
expressInstallUrl为Flash Player更新安装的swf调用地址；如果当前版本低于flashVersion将自动更新。
flashvars为flashvars传递的变量值；
params为flash player控件的参数设置；如menu="false" ；
attributes为flash player控件的属性值设置；如class="flashstyle"；
代码<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>demo</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="swfobject.js"></script>
<script type="text/javascript">
var flashvars = {};
flashvars.sn = "a00001";
var params = {};
params.menu = "false";
params.quality = "autohigh";
params.wmode = "opaque";
params.allowfullscreen = "true";
params.allowscriptaccess = "always";
params.allownetworking = "all";
var attributes = {};
swfobject.embedSWF("test.swf", "flashcontent", "300", "120", "9.0.0", "expressInstall.swf", flashvars, params, attributes);
</script>
</head>
<body>
<div id="flashcontent">
<a href="http://www.adobe.com/go/getflashplayer">
<img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" border="0" />
</a>
</div>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>demo</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="swfobject.js"></script>
<script type="text/javascript">
var flashvars = {};
flashvars.sn = "a00001";
var params = {};
params.menu = "false";
params.quality = "autohigh";
params.wmode = "opaque";
params.allowfullscreen = "true";
params.allowscriptaccess = "always";
params.allownetworking = "all";
var attributes = {};
swfobject.embedSWF("test.swf", "flashcontent", "300", "120", "9.0.0", "expressInstall.swf", flashvars, params, attributes);
</script>
</head>
<body>
<div id="flashcontent">
<a href="http://www.adobe.com/go/getflashplayer">
<img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" border="0" />
</a>
</div>
</body>
</html>
