$(document).ready(function(){

(function() {
  
  var
    _items = $('#slideshow li'),
    _current,
    _index = 0;
  
  function load_slide(index) {
    var item = $(_items[index]);
    if (item.attr('loaded')) return;
    item.html('<img src="'+item.find('a').attr('href')+'" />');
    item.attr('loaded', 'loaded');
  }
  
  function show_slide() {
    if (_current == _items[_index]) return;
    load_slide(_index)
    if (_items[_index+1]) load_slide(_index+1);
    if (_current) $(_current).fadeOut(1200);
    _current = _items[_index];
    $(_current).fadeIn(850);
    $('#slideshow-num').html(_index+1);
  }
  
  $('#slideshow').css('display','block');
  
  show_slide();
  setInterval(function(){
    _index++;
    if (_index==_items.length) _index=0;
    show_slide();
  }, 5000);
  
})();

});