It is now forbidden to smoke cannabis on the streets of Amsterdam's famous red light district. This is just one of the measures the Dutch municipality has taken to shake up the city's image. The sale of alcohol has also been restricted and the mayor is hoping to move the sex workers to an erotic centre on the edge of the city. Over the past few years, Amsterdam residents have felt beleaguered by the huge number of tourists who come for the weekend to get drunk and smoke marijuana. But will these new moves be enough to change the city's reputation as a party destination? Our correspondents report.