js代码

<script type="text/javascript" src="js/jquery-1.11.1.min.js"></script>
<script type="text/javascript">
$(".main-page .nav div").mouseenter(function () {
	var $this = $(this);
	var index = $this.index();
}).mouseleave(function () {
	var $this = $(this);
	var index = $this.index();
}).click(function () {
	var $this = $(this);
	var index = $this.index();
	var l = -(index * 800);
	$(".main-page .nav div").removeClass("on");
	$(".main-page .nav div").eq(index).addClass("on");
	$(".main-page .content .con-ggh:eq(0)").stop().animate({ "margin-top": l }, 500);
});
</script>