Here is a simple image gallery script for fading in and out divs with background images. It is slow and not working properly.

• It would appear all images are appearing and disappearing together without any animation

• This gallery should fade each image out into the next one

  function gallery() {
              timerp = window.setInterval(function() {
                  $('.cornerimg').fadeOut(2000);
  
                  if ($('.cornerimg:visible') == $('.cornerimg').last()) {
                      $('.cornerimg').first().fadeIn(2000);
                  } else {
                      $('.cornerimg').next().fadeIn(2000);
                  };
              }, 6000);
          }
  }
  

Any ideas what has gone wrong with it?