Código Javascript :
<script type="text/javascript">
if(screen.height <= 800)
{
var flashvars = {};
var params = {bgcolor:"#FFFFFF",scale:"showAll",allowFullScreen: "true",allowScriptAccess: "always",wmode: "transparent"};
var attributes = {};
attributes.id = "my_flash";
swfobject.embedSWF("index.swf", "myAlternativeContent", 800, 600, "10.0.0", false, flashvars, params, attributes);
//swffit.fit("my_flash",amp,alc,amp,alc);
swffit.fit("my_flash",800,600,800,600);
}
else
{
var flashvars = {};
var params = {bgcolor:"#FFFFFF",scale:"showAll",allowFullScreen: "true",allowScriptAccess: "always",wmode: "transparent"};
var attributes = {};
attributes.id = "my_flash";
swfobject.embedSWF("index.swf", "myAlternativeContent", 1019, 800, "10.0.0", false, flashvars, params, attributes);
//swffit.fit("my_flash",amp,alc,amp,alc);
swffit.fit("my_flash",1019,800,1019,800);
}
</script>
</head>
<body id='bod'>
<div id="myAlternativeContent">
<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>
</body>
Esto es lo que estoy provando.