jquery确认框和消息提示

    function cancel(orderid)    {        art.confirm('确定要取消订单吗？',            function(){                var url = "<?php echo U('center/school/Apporder/ordercancel&orderid=')?>"+orderid;                $.get(url, function(msg){                    var data = eval('(' + msg + ')');                    if (data.code == 0) {                        art.tips({content:data.message,type:1});                        location.reload();                    }else{                        alert(data.message);                    }                });                      },            function(){} //这里为空，会显示取消按钮，不写取消按钮不会出现        );    }

art.confirm 确认框，art.tips消息提示框