(Photograph) - Belgrade high-school pupils jump from a school window as protests against Yugoslav leader Slobodan Milosevic spread through Serbia. Students walked out of schools in a string of towns run by the opposition. Taxi drivers blocked traffc in the city of Nis and cinemas and theatres closed in the capital, Belgrade. Protesters were hoping to get Milosevic to accept his defeat in the recent elections . Yugoslav authorities have threatened to crack down on protest leaders.