browser detection in javascript

I need help writing a browser detection script in javascript

Something Similar to below, but so I can have many more browsers and the option to load indepedent html's depending on the browser, I would like the ability to add browsers such as netscape, IE, safari, firefox, opera and chrome...

Thanks Bob

 

People still use netscape?
Netscape 8 and 9 were just a rebranded, bug-fixed version of firefox.

 

You're asking about Netscape when the first thing on there is WebTV?

 

Haha, some people might still use windows 98 with their TV card...
Though quite how it got the internet through a TV card I shall never know.