Can you decipher this puzzle?

My friend recently sent me this puzzle that I found to be quite amusing. For some that read Chinese you can decipher the instructions yourself, otherwise the rules and instructions are translated for your convenience below. At first glance, it may seem quite impossible but if you persevere, eventually you should be able to solve it. Good luck and tell me how long you took!

Go to this website: http://freeweb.siol.net/danej/riverIQGame.swf

"Everybody has to cross the river".

The following rules apply:

1) Only 2 persons on the raft at a time.
2) The father can not stay with any of the daughters, without their mother's presence.
3) The mother can not stay with any of the sons, without their father's presence.
4) The thief (striped shirt) can not stay with any family member, if the policeman is not there.
5) Only the Father, the Mother and the Policeman know how to operate the raft.

To start click on the big blue circle on the right.
To move the people click on them.
To move the raft click on the pole on the opposite side of the river.