easyui textbox 获取焦点

    function Admin_ListAdd()
    {
        $('#ListInfo').css({ display: "inherit" });
        $("#Department_Name").textbox("setValue", '');
        $("#Department_Remark").textbox("setValue", '');
        $('#ListInfo input').val('');
        $('#ListInfo').dialog({
            title: '添加单位',
            buttons: [{
                text: '确定',
                iconCls: 'icon-ok',
                handler: function () {

                    if ($("#Department_Name").val() == "") {
                        $.messager.alert('提示', '单位名称不能为空!', 'info',function () {
                            $("#Department_Name").next('span').find('input').focus();
                        });
                     
                        return;
                    }
                    if ($("#Department_Leval").combobox('getValue') == "") {
                        $.messager.alert('提示', '单位级别不能为空!', 'info', function () {
                            $("#Department_Leval").combobox('showPanel');
                        });
                        
                        return;
                    }

                    $.ajax({
                        type: "POST",
                        url: "/Provider/HandlerDepartment.ashx",
                        async: false,
                        data: "method=add&Department_Name=" + $("#Department_Name").val() + "&Department_Leval=" + $("#Department_Leval").combobox('getValue') + "&Department_Remark=" + $("#Department_Remark").val(),
                        success: function (msg) {
                            if (msg == '1')
                            {  $('#Admin_List').datagrid("reload"); 
                                $('#ListInfo').dialog('close');
                              
                            }
                            else
                            {
                                $.messager.alert('提示', '该单位已存在!', 'info');
                            }

                        }
                    });
                }

            }, {
                text: '取消',
                iconCls: 'icon-cancel',
                handler: function () {
                    $('#ListInfo').dialog('close');
                }
            }]
        });

    }