<script>
<!--
var thecodename ;
thecodename=navigator.appCodeName ;
document.write("code name: ", thecodename) ;
//-->
</script>

It's usually, if not always, Mozilla.

<script>
<!--
var theappname ;
theappname=navigator.appName ;
document.write("application name: "+theappname) ;
//-->
</script>

<script>
<!--
var theversion ;
theversion=navigator.appVersion ;
document.write("version: "+theversion) ;
//-->
</script>

<script>
<!--
var theplatform ;
theplatform=navigator.platform ;
document.write("platform: ", theplatform) ;
//-->
</script>




What's my user agent?






<script>
<!--
var theagent ;
theagent=navigator.userAgent ;
document.write("user agent: ", theagent) ;
//-->
</script>







All together now!






<script>
<!--
var thecodename=navigator.appCodeName ;
var theappname=navigator.appName ;
var theversion=navigator.appVersion ;
var theplatform=navigator.platform ;
var theagent=navigator.userAgent ;
document.write("Welcome, <b>", theappname, "</b> ver. <b>", theversion, "</b>") ;
document.write("<br>") ;
document.write("running on <b>", theplatform, "</b>") ;
document.write("<br>") ;
document.write("code name: <b>", thecodename, "</b>") ;
document.write("<br>") ;
document.write("AKA: <b>", theagent, "<b>") ;
//-->
</script>