Just guessing here, but wouldn't it be possible to put something like:
application/msword doc application/vnd.ms-excel xls application/vnd.ms-powerpoint ppt
and skip the coding?
Mike
No, because then MediaWiki won't let you upload the file because the system sees the ppt and xls files as msword mime type. The real problem is that all of those formats have the same magic number, so you have to do trickery.
This may be different with older version of office, but the newer versions seem to do this.
V/r,
Ryan Lane