if(navigator.userAgent.indexOf("Win") != -1){
	if(navigator.appVersion.indexOf("MSIE") == -1){
		if (navigator.appName.indexOf("Netscape") != -1){
			document.write('<link rel="stylesheet" href="/win_nn.css" type="text/css">');
		}
	} else {
		document.write('<link rel="stylesheet" href="/win_ie.css" type="text/css">');
	}
}

if(navigator.userAgent.indexOf("Mac") != -1){
	document.write('<link rel="stylesheet" href="/mac.css" type="text/css">');
}