Jquery validate error message placement location

I am trying to use jquery validate plugin on my 5 questions quiz form. But I have issue with how to display the validated error message for require field.

My form is something like this:

<form id="quiz">
<table width="100%">
<tbody>
<tr id="qntr">
    <td id="qntd">My question 1</td>
    <!-- if field is empty, validate error message to appear over here -->
</tr>
<tr id="anstr">
    <td id="anstd">
    <table><tr>
        <td>Choice 1</td>
        <td>Choice 2</td>
        <td>Choice 3</td>
    </tr></table>
    </td>
</tr>
<tr id="qntr">开发者_StackOverflow中文版;
    <td id="qntd">My question 2</td>
    <!-- if field is empty, validate error message to appear over here -->
</tr>
<tr id="anstr">
    <td id="anstd">
    <table><tr>
        <td>Choice 1</td>
        <td>Choice 2</td>
        <td>Choice 3</td>
    </tr></table>
    </td>
</tr>
...
</tbody>
</table>
</form>

My validate.js:

$(document).ready(function() {
        var form = $("#quiz");
        form.validate({

            errorPlacement: function(error, element) {
                 error.insertAfter(x);  // what should x be?
            }

        });

});

I would like to what should be used to replace 'x' in the errorPlacement for my validate error message to show up in the of my form?

Thank you.

UPDATE

Here is my updated solution:

error.appendTo(element.parents('#anstr').prev('tr'));

ORIGINAL POST

Did you try?

error.insertAfter(element);