They are either a "Green-thighed Frog" (litoria brevipalmata) or a "Broad-palmed Rocketfrog" (litoria latopalmata) but I can't quite tell which.
They would have been about an inch long, roughly.
This shot taken for scale. Notice the eucalyptus flower cases on the next level above the frog. Or the eucalyptus flower "petals" strewn around near the frog.
View all photos taken: Sunday, 27th August 2006, This photo: 6:55am