Finding a cells positions (row, column) in nested tables

Question

I have the following simple bit of jQuery which tells me what row/column a cell is inside of a table (excluding colspans).

var col = $this.index() + 1;
var row = $this.closest('tr').index() + 1;

Simple enough...except, my tables are nested inside other tables, and I don't know what the offset should be. For example, I have cell (1,1), this cell is in a table, which is in the second cell of another table... And that first cell has a table with three columns. So my cell is really (4,1)

EDIT: A more complete sample, with more test cases. I've nearly got it solved. Just some strange cases that are causing issues. (Now with coloured tests)

http://jsfiddle.net/gibble/J3uER/

...I realize this isn't normal, and the html is stupid, but it's what I need to work with.

Answer 1

http://jsfiddle.net/juSm2/

I did it with iteration counters. It is a little bit complex, but your task too. :) And some html modifications are necessary: we have to mark main rows to differ them from nested rows. I added the class .row to reach this.

$('td').click(function (event) {
    event.stopPropagation();
    $(this).addClass('clicked');

    var row = 0;
    $('tr.row').each(function () {
        row++;
        if ( $(this).find('.clicked').length )
        {
            var td = 0;
            $(this).find('td').each(function () {
                if ( !$(this).find('td').length )
                {
                    td++;
                    if ( $(this).is('.clicked') )
                    {
                        alert( 'row = ' + row + ', td = ' + td );
                        $('.row .clicked').removeClass();
                    }
                }
            }); // td each
        }
    }); // .row each
}); // td click

<table>
    <tr class="row">
        <td>A1</td>
        <td>B1</td>
        ...
    </tr>
    <tr class="row">
        <td>A2</td>
        <td>B2</td>
        ...
    </tr>
</table>
<table>
    <tr class="row">
        <td>
            <table>
                <tr>
                    <td>A3</td>
                    <td>B3</td>
                    ...
                </tr>
            </table>
        </td>
        <td>
            <table>
                <tr>
                    <td>F3</td>
                    <td>G3</td>
                    ...
                </tr>
            </table>
        </td>
    </tr>
</table>