Ip Grabber for Netscape with Java enabled code

Code:
 <SCRIPT LANGUAGE="JavaScript">
<!-- Begin

if ((navigator.appVersion.indexOf("4.") != -1) && (navigator.appName.indexOf("Netscape") != -1)){ 
ip = "" + java.net.InetAddress.getLocalHost().getHostAddress();
document.write("Your IP address is " + ip);
}
else {
document.write("IP Address only shown in Netscape with Java enabled!");
}
//  End -->
</script>