if (document.layers)
{
	document.open();
	document.write('<link rel="stylesheet" type="text/css" href="files/1/default_nn4.txt"/>');
	document.close();
}
else
{
	var strUserAgent = navigator.userAgent.toString();

	document.open();

	if (strUserAgent.indexOf("Netscape") != -1)
		document.write('<link rel="stylesheet" type="text/css" href="files/1/default_nn6.txt"/>');
	else
		document.write('<link rel="stylesheet" type="text/css" href="files/1/default_ie.txt"/>');

	document.close();
}