Use Jquery to find the parent table, of a table, of a td

I am customising Sage CRM, so I have no control over the HTML that is written and can't add IDs or class's to the table layouts the CRM spits out. I want to hide a higher (not top) level table based on a users selection of a select dropdown. I can only get a jQuery selector hooked onto the title row of a table within the table I want to hide.

The DOM goes something like:

//Lots of other table structures above this in the DOM....
<table>  <---- this is the table I want to show or hide based on the users selection
  <tbody>
    <tr>
     <td>
       <table>
         <tbody>
           <tr>
             <td class="PANEREPEAT">  <---- this is the node I can get selector to
                 Valuation information
////

So I do the below client side javascript:

    var val_information_screen;

    $('.PANEREPEAT').filter(function () {
        //Find the valuation information screen
        return $(this).text() == 'Valuation information';
    }).each(function () { //iterate through all of these (there should only be one!)
        val_information_screen = $(this);
    });

    var sel_ofee_type = $('#ofee_type');
    if (sel_ofee_type.val() == '006') {
        val_information_screen.closest('table').parents("table:first").show();
    } else {
        val_information_screen.closest('table').parents("table:first").hide();
    }

It does work, it just is not particularly beautiful. The bit that I really detest is below. Is there a better way to traverse up the DOM using jQuery?

val_information_screen.closest('table').parents("table:first").show();
val_information_screen.closest('table').parents("table:first").hide();

If you are sure that it has fixed structure, then you can use this,

$(td-selector).parents("table").eq(1).hide();

In your case,

val_information_screen.parents("table").eq(1).hide();