Rendering of index points in footnotes

[Brad Scott <brad.scott@brambletye-publishing.co.uk>]

Hi

Is it possible to tweak the stylesheets so that the index formatting is 
different when indexterms are in a footnote?

The example below shows what we'd like to achieve, ideally:

    Afrobarometer 12, 30n. 28, 44nn. 10-13

ie include the footnote number along with the page number when the index 
is compiled and, for indexterms with a range, have a range of the note 
numbers.

Hope this explains the scenario adequately.

Thank you

Brad