var slides; 
  var ind = 0; 
  var last = 0; 
  
  $(function(){
    slides = $('#slider .slide'); 
    slides.not(':first').hide(); 
    
    window.setInterval('moveSlider()', 4000); 
  }); 
  
  function moveSlider(){
    if(++ind > slides.size()-1 ) ind = 0; 
    
    slides.eq( last ).fadeOut(); 
    slides.eq( ind ).fadeIn(); 
    last = ind; 
  }