redirect to maintenance page

[Sagar <sunilsagar31@xxxxxxxxx>]

Hi All,
I need to make configuration on Apache installed on Windows Server 2003. To redirect to maintenance page.
I have three application A, B and C. I access these
application as http://<server-name>/<aplication name> for example http://<server-name>/A
I have made a common maintenance redirect for error 404 and 500 and this redirects when any application goes down.
Now
I want to configure in such a way if my application A goes down then
webserver should redirect a page which I have made for Application A
and it would display "Application A is down for maintenance."
Similarly if Application page B goes down it should redirect the some other maintenance page created for application B and C as well.

Thanks 
Sunil