Iran\'s supreme leader Ayatollah Ali Khamenei on Saturday congratulated moderate cleric Hassan Rowhani on winning the presidential election, the website leader.ir reported. \"Congratulations to the people and to president-elect Hojatoleslam Hassan Rowhani,\" Khamenei\'s Internet site said. \"I urge everyone to help the president-elect and his colleagues in the government, as he is the president of the whole nation,\" he added.