JavaScript 訪問者のPCの詳細情報を取得する

[ＷＥＢ][JavaScript 訪問者のPCの詳細情報を取得する] 
<script language="JavaScript">
<!--
document.write('<TABLE class="hanyoua" BORDER="0">')
document.write('<TR><TD align="right">CodeName:</TD><TD>' + navigator.appCodeName + '</TD></TR>'); 
document.write('<TR><TD align="right">Name:</TD><TD>' + navigator.appName + '</TD></TR>'); 
document.write('<TR><TD align="right">Version:</TD><TD>' + navigator.appVersion + '</TD></TR>'); 
document.write('<TR><TD align="right">Platform:</TD><TD>' + navigator.platform + '</TD></TR>'); 
document.write('<TR><TD align="right">UserAgent:</TD><TD>' + navigator.userAgent + '</TD></TR>'); 
document.write('</TABLE>')
//-->
</script>