$(document).ready(function() {     
  $('#nav-news > li').click(function(){   
    if (!$(this).hasClass('selected')) {       
       $('#nav-news > li').removeClass('selected');   
       $(this).addClass('selected');   
       $('#news-scroll div').slideUp('1500');   
       $('#news-scroll div:eq(' + $('#nav-news > li').index(this) + ')').slideDown('1500');   
    }
  });  
});