ie4 = ((navigator.appName == "Microsoft Internet Explorer") &&
           (parseInt(navigator.appVersion) >= 4 ))
                        
ns4 = ((navigator.appName == "Netscape") &&
           (parseInt(navigator.appVersion) < 5 ) && (parseInt(navigator.appVersion) >=4 ))

if(ns4) {
        document.write("<link rel=stylesheet type='text/css' href='/stylesns.css'>");
} else {
		document.write("<link rel=stylesheet type='text/css' href='/stylesie.css'>");
}