>> "Julien" == Julien Cubizolles <j.cubizolles@free.fr> writes:

   > Eric Abrahamsen <eric@ericabrahamsen.net> writes:
   >> Uwe Brauer <oub@mat.ucm.es> writes:

   > I used a function doing just that a few days ago found somewhere on the
   > web but I can't find it anymore. Maybe you'll be luckier than me with
   > google.


That is great, I mean that you found the function. Do you recall  its name?