Dont upgrade on a live site to 2.0 or 2.1 from 1.5 very bad idea.
Looks like they changed the way it parses it.
v1.5
Code:
<div id="playerdiv">
Install Flash Please
</div>
<script type="text/javascript">
var so = new SWFObject("player.swf","main","400","310","8","#000000");
so.addParam("allowFullScreen","true");
so.addVariable("MediaLink","clip.flv");
so.addVariable("image","clip.jpg");
so.addVariable("playOnStart","false");
so.addVariable("showPlayButton","true");
so.write("playerdiv");
</script>
v2.1
Code:
<script type="text/javascript">
var flashvars = {};
flashvars.MediaLink = "clip.flv";
flashvars.image = "clip.jpg";
flashvars.playOnStart = "false";
flashvars.showPlayButton = "true";
var params = {};
params.bgcolor = "#000000";
params.allowfullscreen = "true";
params.allowscriptaccess = "sameDomain";
var attributes = {};
attributes.id = "flashvideo";
attributes.styleclass = "flashvideo";
attributes.align = "middle";
swfobject.embedSWF("player.swf", "flashvideo", "437", "310", "9.0.0", false, flashvars, params, attributes);
</script>
</head>
<body>
<div id="flashvideo">
<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>
</div>