JS 控制文本框必须输入值才能查询

有俩文本框，必须输入其中一个才能查询

 <div>
            <table>
                <tbody>
                    <tr>
                        <td>
                            <span class="min_label">ID</span>
                            @Html.TextBoxFor(model => model.Condition.ID, new { @class = "input_txt w130 textbox1" })
                        </td>
                        <td>
                            <span class="label">Name</span>
                            @Html.TextBoxFor(model => model.Condition.Name, new { @class = "input_txt w130 textbox2" })
                            <span class="field-validation-valid pnrticketno" data-valmsg-replace="true"><span class="">请填写查询条件</span></span>
                        </td>
                    </tr>
                    <tr>
                        <td colspan="3">
                            <input type="submit" class="btn_sub ml60 submit" value="立即查询" />
                    </tr>
                </tbody>
            </table>
        </div>

<script type="text/javascript">       

//移除提示    

function removeError($class) {        

$class.addClass("field-validation-valid").removeClass("field-validation-error");     }    

//验证错误    

function addError($class) {        

$class.removeClass("field-validation-valid").addClass("field-validation-error");     }    

//判断查询条件是否填写 移除提示信息    

$(".textbox1").focus(function () {

        removeError($(".pnrticketno"));

    });    

//点击查询 需验证的信息    

$(".submit").click(function () {        

if ($(".textbox1").val() == "" && $(".textbox2").val() == "") {            

addError($(".pnrticketno"));            

return false;         }     });

</script>