谷歌浏览器下，为啥不弹框
;(function($){
var Carousel=function(poster){
alert(poster);
};
Carousel.prototype={
};
window["Carousel"]=Carousel;
})(jQuery);
//上面是carousel.js;下面是html内的js
<script>
$(function(){
var Carousel=new Carousel($("J_Poster").eq(0));
});
</script>
