//sytle sheet set
var browser = navigator.appName;
var version = navigator.appVersion;
var agent = navigator.userAgent;
var csstag ='<LINK REL="Stylesheet" TYPE="text/css" HREF="/css/';
var cssfile = 'style.css';

if(version.indexOf("Mac") >= 0){
	var os = "Mac";
	cssfile = 'style_mac.css'
}
csstag += cssfile;
csstag += '" TITLE="CSS">';
document.write(csstag);
document.close();