function writestyle(platform) {
	if (platform == "mac") {
		document.write("<link rel='stylesheet' type='text/css' href='../css/ma_2.css'>")
	}
	else if (platform == "pc") {
		document.write("<link rel='stylesheet' type='text/css' href='../css/ma_1.css'>")
	}
}

if (navigator.appVersion.indexOf("Mac") != -1 ) {
	writestyle("mac")
}
else { 
	writestyle("pc")
}