A Family, a Policeman, a Thief and a Raft....

Here's a challenge for all you puzzle lovers out there...

Try out this game

Website: http://freeweb.siol.net/danej/riverIQGame.swf
To start: Press big blue button
The Goal: To move everyone to the other side of the river
Rules: Only two people are allowed on the raft at a time. The father cannot stay with any of the daughters without their mother's presence. The mother cannot stay with any of the sons without their father's presence. The thief cannot stay with any family member if the policeman is not there. Only the father, the mother and the policeman know how to operate the raft.

I got it eventually, but it took a while.

Thanks to Jen for the link.