var uA=navigator.userAgent;
if (uA.indexOf('Mac') == -1)
{
	var d=document, g='getElementById', o=d[g]('os-notice'), os=osName(uA);
	if (o)
	{
		o.innerHTML = '<p><em>Boxer is only available for Mac OS X.</em> To play DOS games on <span id="your-os">your operating system</span>, try <a href="http://dosbox.com/" id="download-dosbox">DOSBox</a> or <a href="http://scummvm.org/" id="download-scummvm">ScummVM</a>.</p>';

		if (os) d[g]('your-os').innerHTML = os;
	}
}

function osName(from)
{
	var s, oses = {'Win': 'Windows', 'Ubuntu': 'Ubuntu', 'Debian': 'Debian', 'Linux': 'Linux', 'X11': 'Unix'};
	for (s in oses) if (from.indexOf(s) != -1) return oses[s];
}