// set Variable
	var Agent = navigator.userAgent;
	var cssDir = 'css/';	//CSSディレクトリ（../などでもよし）
	var cssTags = '<link rel="stylesheet" type="text/css" href="';
	var flag = null;

// CSS deverge for Cross Platform & Cross Browser
if (Agent.indexOf('Win') != -1) {
	if (document.all) { // Win_IE
		flag = "style_win_ie";
		document.write(cssTags + cssDir + flag + '.css" title="style_win_ie.css">');
	} else { // Win_NS
		flag = "style_win_ns";
		document.write(cssTags + cssDir + flag + '.css" title="style_win_ns.css">');
	}
}

if (Agent.indexOf('Mac') != -1) {
	if (document.all) { // Mac_IE
		flag = "style";
		document.write(cssTags + cssDir + flag + '.css" title="style.css">');
	} else { // Mac_NS
		flag = "style";
		document.write(cssTags + cssDir + flag + '.css" title="style.css">');
	}
}