An extramarital affair involving a senior Indonesian politician and his mistress is highlighting a contentious debate in Indonesia over traditional Islamic attitudes towards sex and morality. A 42-second video clip shot on a camera phone and circulating widely since early this month shows pudgy lawmaker Yahya Zaini naked, laughing and chatting as he advances on an equally naked and giggling woman named Maria Eva, a singer of the raunchy and sensuous local pop music known as dangdut. He soon climbs on board the chanteuse and puts a hand up to stop the recording.