[Orgmode] day-agenda: show whole-day-events first

[Eraldo Helal]

Right now (default), I get time specific entries shown before events
that last the whole day. I would however prefer to get whole-day
entries(no time) first and time-entries after.

org-agenda-sorting-strategy:
agenda
  habit-down time-up priority-down category-keep
,----[ result (now) ]
| Day-agenda (W23):
| Monday      7 June 2010 W23
|   jku:        12:45-15:15  Betriebssysteme
|   jku:        15:30-18:45  Betriebswirtschaftslehre
|   review:     Scheduled:  TODO daily review
|   event:      APPT TEX speech
`----

,----[ result (would like to have) ]
| Day-agenda (W23):
| Monday      7 June 2010 W23
|   event:      APPT TEX speech
|   jku:        12:45-15:15  Betriebssysteme
|   jku:        15:30-18:45  Betriebswirtschaftslehre
|   review:     Scheduled:  TODO daily review
`----
the Scheduled item can also go above the time-events if that is easier
to get.

Would be great if someone could enlighten me with the matching sorting
strategy. :)
Or suggest what else I could do/use instead.

Greetings from Austria,
Eraldo