var Win=(navigator.userAgent.indexOf("Win",0)!=-1);
	var Mac=(navigator.userAgent.indexOf("Mac",0)!=-1);
	if(Mac) {
		document.write('<LINK rel="stylesheet" href="css/mac.css" type="text/css">');
	}
	else if(Win) {
		document.write('<LINK rel="stylesheet" href="css/win.css" type="text/css">');
	}