var o="win";
var b="ie";

if (navigator.userAgent.indexOf("Mac")!=-1) {
	o="mac";
	for (i=0; i<navigator.plugins.length; i++) if (navigator.plugins[i].filename.indexOf(".") >= 0) o = "macosx";

} else {
	o="win";
}

if (navigator.appName.indexOf("Microsoft")!=-1 || navigator.appName.indexOf("Opera")!=-1) {
	b="ie";
} else if(navigator.appVersion.charAt(0) >= 5) {
	b="moz";
} else {
	b="nn";
}

document.write('<link rel="stylesheet" type="text/css" href="css/'+o+'_'+b+'.css">');