$(function(){
 $("#carouselInner").css("width",620*$("#carouselInner ul.column").size()+"px");
 $("#carouselInner ul.column:last").prependTo("#carouselInner");
 $("#carouselInner").css("margin-left","-620px");
 
 $("#carouselPrev").click(function(){
  $("#carouselNext,#carouselPrev").hide();
  $("#carouselInner").animate({
   marginLeft : parseInt($("#carouselInner").css("margin-left"))+620+"px"},"slow","swing",function(){
    $("#carouselInner").css("margin-left","-620p");
    $("#carouselInner ul.column:last").prependTo("#carouselInner");
    $("#carouselNext,#carouselPrev").show();
   });
 });

 $("#carouselNext").click(function(){
  $("#carouselNext,#carouselPrev").hide();
  $("#carouselInner").animate({
   marginLeft : parseInt($("#carouselInner").css("margin-left"))-620+"px"},"slow","swing",function(){
    $("#carouselInner").css("margin-left","-620px");
    $("#carouselInner ul.column:first").appendTo("#carouselInner");
    $("#carouselNext,#carouselPrev").show();
   });
  });
});