A CHILDREN'S welfare group is calling for the setting up of a classification system for theatre productions similar to that used for films. It says there are not enough controls to protect children from indecency in shows. The director of Against Child Abuse, Priscilla Lui Tsang Sun-kai, said: 'Although it is not as popular for people to take their children to the theatre as it is to a cinema, there are still children attending shows that may disturb them. 'A classification system would help parents decide on what they should allow their children to see.' A spokesman for the Television and Entertainment Licensing Authority said it did not scrutinise the content of stage productions. She said it was up to the organisers of shows to make sure everybody knew whether the productions were suitable for children. 'If organisers have any doubts about the contents of the drama then they can contact us for advice. If they don't tell us and something objectionable is shown then they are subject to the laws of Hong Kong.' But Mrs Lui said objectionable productions should not be shown in the first place, warning that art and levels of obscenity were measured differently in Hong Kong from the West where many productions were based. A recent performance of Oscar Wilde's The Picture of Dorian Gray was jeered by parents, teachers and dozens of students. The play describes how a man sells his soul to the devil to remain young. Legislative Councillor Fred Li Wah-ming called for caution, saying there was a delicate balance between the protection of children and the freedom of artistic expression. 'Above all, I think it is the parents' responsibility whether they let children watch dramas. However, we have to closely monitor the issue as there must be this balance.'