BootStrap中的轮播carousel doesn't work

1.Js 文件引入的顺序：jquery.js  bootstrap-transition.js bootstrap-carousel.js

2.<a class="carousel-control left" href="#myCarousel" data-slide="prev">翻页的箭头应该放在<div class="carousel-inner">外面

<script src="javascripts/jquery.js" type="text/javascript"></script>
<script src="javascripts/bootstrap-transition.js" type="text/javascript"></script>
<script src="javascripts/bootstrap-carousel.js" type="text/javascript"></script>

<script type="text/javascript">
$(function(){
    $('#myCarousel').carousel({
    interval:2000
    }
   );
});
</script>