var carouselSpeed = 5000
  , offset = 0;

$(function(){
 
  carousel();
  $('.bb-carousel').hover(function(){
    $(this).find('ul').stop();
  },function(){
    var $ul = $(this).find('ul');
    $ul.animate({left: '-200px'},(1-parseInt($ul.css('left'))/-200)*carouselSpeed,'linear',carousel);
  });
  
});

function carousel()
{
  $('.bb-carousel ul li').first().appendTo( $('.bb-carousel ul') );
  $('.bb-carousel ul').css('left',0).animate({left: '-=200'},carouselSpeed,'linear',carousel);
}