var Agent = navigator.userAgent;
	var cssDir = '/css/';
	var cssTags = '<link rel="stylesheet" type="text/css" href="';
	var flag = null;

if (Agent.indexOf('Win') != -1) {
	if (document.all) { // Win_IE
		flag = "wie";
		document.open();
		document.write(cssTags + cssDir + flag + '.css" title="WinIE">');
		document.close();
	} else if (Agent.indexOf('Gecko') != -1) { // Win_NS6
		flag = "wns6";
		document.open();
		document.write(cssTags + cssDir + flag + '.css" title="WinNS6">');
		document.close();
	} else { // Win_NS
		flag = "wns";
		document.open();
		document.write(cssTags + cssDir + flag + '.css" title="WinNS">');
		document.close();
	}
}

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