browser detection and redirection

[jaydev]

Hi,

I am looking for code to detect and redirect to the corresponding
browser download page if the clients uses old version, could anyone
have a sample code for this?
I want to use the following version browser only, if they are other
types I need to redirect to there download page.
Internet Explorer version 5.0and above
Netscape Navigator version 7.0 and above
Mozilla version 1.3 and above
Opera version 7.0 and above
Safari/OmniWeb version 4.5 and above
Konqueror version 3.2 and above


Appreciate any help

Thanks,
Jay