<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
<html lang=en xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<link rel=StyleSheet href="css/overlay-apple.css" type="text/css" media="all">
<!--[if lt IE 7]>
<![endif]-->
<title>Hello</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<div id="result" style="border: 1px solid; margin: 5px; padding: 5px;"></div>
<script type="text/javascript">
var result = 6/3;
document.getElementById('result').innerHTML="Результат деления 6 на 3: "+result;
</script>
</body>
</html>
И да, юзать in-line css - плохой тон.