// set Variable
	var Agent = navigator.userAgent;
	var cssDir = '../css/';
	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 = "wie";
		document.open();
		document.write(cssTags + cssDir + flag + '.css" title="WinIE_style">');
		document.close();
	} else { // Win_NS
		flag = "wns";
		document.open();
		document.write(cssTags + cssDir + flag + '.css" title="WinNS_style">');
		document.close();
	}
}

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

// for debug
/*
alert(flag);
*/