       {
                if(document.getElementsByName('id')[i].checked){
                    if(str=='') str += document.getElementsByName('id')[i].value;
                    else str += ',' + document.getElementsByName('id')[i].value;
                }
            }
            if(str==''){
                alert('请选择你要导出的数据!');
                return;
            }else{
                window.location.href = "user/exportExcel.do?ids="+str;
            }
        }

        function send