URL Redirection request.

To use a class:

    if { ([class match [string tolower [HTTP::query]] contains class_NoQueryStringValuesToRedirect]) } {

        HTTP::response 301 Location "http://go.pqr.com/elib"

    }

The values in the class would be as follows (lower case!):

no=sav603
no=dp6012
[...]

You could get more fancy and extract the value instead of comparing to the name+value, but that's probably not necessary here.

Also, note that I used a 301 instead of a 302. The benefit is that it gets cached by clients (saving requests). However, if the destination is likely to change you'll want to use a 302 (which is what

HTTP::redirect