Getting Browser Information in javaScript

<html>
<head>
<script>
function getBrowserName()
{
tag_link.innerHTML="You are surfing internet through

"+'<b>'+navigator.appName+'</b>'+" browser family."
}
</script>
</head>
<body onLoad="getBrowserName()">
<center>
<p id="tag_link" style="font-size:30"></p>
</center>
</body>
</html>

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Hi! I'm Java...

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