getElementById('content').innerHTML Prob

Hi
Does any body have an idea why the contents inside the div wont display??
Probably a stupid question.
:ogre:

Also MM_FlashCanPlay works fine


if ( MM_FlashCanPlay ) {
document.getElementById('content').innerHTML = "Content filled";
} else{
document.getElementById('content').innerHTML = "Content not filled";
}


</SCRIPT>


</head>

<body>
<div id="content"></div>
</body>
</html>