function vercheck(IEversion,NNversion){

	if ((navigator.appName.indexOf("Microsoft") >= 0)
		&& (IEversion != 0)
		&& (IEversion <= parseFloat(navigator.appVersion))){
		return true;
	} else {
		if ((navigator.appName.indexOf("Netscape") >= 0)
			&& (NNversion != 0)
			&& (NNversion <= parseFloat(navigator.appVersion))){
			return true;
		} else {
			return false;
		}
	}

}


if (navigator.userAgent.indexOf("Win") >= 0) {
	if (vercheck(1,0)) {
		document.write('<link rel="stylesheet" href="css/wi_style.css" type="text/css">');
	} else {
		document.write('<link rel="stylesheet" href="css/wn_style.css" type="text/css">');
	}
} else {
	document.write('<link rel="stylesheet" href="css/mac_style.css" type="text/css">');
}