How to show browser doesn't supported error message ?

[premecorp]

I have used yahoo ping box, Its working fine on firefox and google crome but it not showing Internet Explorer. So in that case I want to show an error message "IE does not support in yahoo pingbox..." in that place. How can I do this thing if any one have any idea regarding this pls help me...

Regards,
Premashish

[freshnet]

You'll want to detect the user agent and display a message based on that. http://www.quirksmode.org/js/detect.html this should help you.