;(function($){
 $(document).ready(function(){
  $('#banners')
   .delegate("a.nav", "click", function(event){
    event.preventDefault();
    var $obj = $(this), banners = $('#banners li').length - 1, $cur = $('#banners li.selected'), curPos = $cur.prevAll().length; nextPos = 0, dir = "left", $new = {};
    dir = ($obj.hasClass("next")) ? "right" : "left";
    nextPos = (($obj.hasClass("next")) ? 1 : -1) + curPos;
    nextPos = (nextPos < 0) ? banners : (nextPos > banners) ? 0 : nextPos;
    $next = $('#banners li:eq(' + nextPos + ')');
    $cur.hide().removeClass("selected");
    $next.effect("slide", { direction: dir }, 200, function(){
     $(this).addClass("selected");
    });
   });
 });
})(jQuery);