轮播图带按钮

[javascript]代码库

<script type="text/javascript">
var i=0;
var width=340;
  function qu(){
    var tmp=width*i;
	$('li.cur').removeClass('cur');
	$('.num li').eq(i).addClass('cur');
    $('.lun1').animate({left:'-'+tmp+'px'},"slow");
	if(i<3)
	{ 
	  i++;
	}
	else
	{
	  i=0;
	}
	setTimeout('qu()',2000);
  }
</script>
<script type="text/javascript">
		qu();
</script>
<script type="text/javascript">
var width=340;
$('.num li').mouseover(function(){
 var i= $(this).index();
 var tmp=width*i;
 //console.log(tmp);
 $('li.cur').removeClass('cur');
 $('.num li').eq(i).addClass('cur');
 $('.lun1').animate({left:'-'+tmp+'px'},"slow");
   //console.log( $i);
});

</script>