var ua = navigator.userAgent;

var win = (ua.indexOf('Win') != -1);
var mac = (ua.indexOf('Mac') != -1);

var ng = (!document.all && document.getElementById);
var ie = (document.all);
var ns = (document.layers);

if (win) { //Windows
	if (ng) { //Netscape Gecko
		with (document) {
			open();
			writeln('<style type="text/css">');
			writeln('@import url(/css/winnn6.css);');
			writeln('</style>');
			close();
		}
	}
	else if (ie) { //Internet Explorer
		with (document) {
			open();
			writeln('<style type="text/css">');
			writeln('@import url(/css/winie.css);');
			writeln('</style>');
			close();
		}
	}
	else if (ns) { //Netscape 4.x
		with (document) {
			open();
			writeln('<link rel="stylesheet" type="text/css" href="/css/winnn.css">');
			close();
		}
	}
}
else if (mac) { //Macintosh
	if (ng) { //Netscape Gecko
		with (document) {
			open();
			writeln('<style type="text/css">');
			writeln('@import url(/css/macnn6.css);');
			writeln('</style>');
			close();
		}
	}
	else if (ie) { //Internet Explorer
		with (document) {
			open();
			writeln('<style type="text/css">');
			writeln('@import url(/css/macie.css);');
			writeln('</style>');
			close();
		}
	}
	else if (ns) { //Netscape 4.x
		with (document) {
			open();
			writeln('<link rel="stylesheet" type="text/css" href="/css/macnn.css">');
			close();
		}
	}
}