Così funziona con IE e FF e dovrebbe essere anche valido
codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Documento senza titolo</title>

</head>

<body>

<!--[if IE]>  
<object
classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" 
codebase="http://download.macromedia.com
/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"
width="220" height="29">
<param name="movie" value="digitalora.swf">
</object> 
<![endif]-->     
  
<object
data="digitalora.swf"
type="projection"
width="220" height="29"
border="0"
standby="Attendi">
</object>  
 


</body>
</html>