if (typeof(navigator.platform) != 'undefined') {
document.writeln(navigator.platform);
switch (navigator.platform) {
case 'Win32' : document.writeln(' - Windows 32-bit Plattform'); break;
case 'Windows' : document.writeln(' - Windows 32-bit Plattform'); break;
case 'Win16' : document.writeln(' - Windows 16-bit Plattform'); break;
case 'WinCE' : document.writeln(' - Windows CE Plattform'); break;
default : document.writeln(' - andere Plattform'); break;
}
} else
document.writeln('Nicht unterstützt!');