Plot: In a story that combines scandal and revolution, cultural correspondent Stephen Smith explores how Vienna's artists rebelled against the establishment in the late 19th century and brought their own highly-sexed version of Art Nouveau to the banks of the Danube. Looking at the eye-watering work of Gustav Klimt, Smith discovers that Viennese 'Jugenstil' was more than just a decorative delight, but saw artists struggle to bring social meaning to the new style