<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script src="Scripts/jquery-1.7.1.min.js"></script>
    <script type="text/javascript">
        var os = navigator.platform;
        for (var i in navigator) {
            document.write(i + "=" + navigator[i] + '<br>');
        }

        var OSName = "Unknown OS";
        if (navigator.appVersion.indexOf("Win") != -1) OSName = "Windows";
        if (navigator.appVersion.indexOf("Mac") != -1) OSName = "MacOS";
        if (navigator.appVersion.indexOf("X11") != -1) OSName = "UNIX";
        if (navigator.appVersion.indexOf("Linux") != -1) OSName = "Linux";

        document.write('Your OS: ' + OSName);
</script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>