var cur_page=1;

$(document).ready(startLoadSpecial);

function startLoadSpecial() {
  setTimeout(loadSpecial, 8000);
}

function loadSpecial() {
  if (cur_page == 1) {
    $('#content_news_1').html($('#content_news').html());
    $('#content_popular_1').html($('#content_popular').html());
  } 

  cur_page++;
  if (cur_page == 4) cur_page=1;
  
  $('#content_news').html($('#content_news_'+cur_page).html());
  $('#content_popular').html($('#content_popular_'+cur_page).html());
  
/*
  var id = $('#special_next')[0].value;
  var url = '/ajax/special.php?next=' + id;
  $('#special').load(url);
*/
  startLoadSpecial();
}