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jquery how to select the nth-child of the current TD in a dynamic table
$('.notdupe').live('click', function (e) {
        //alert("indivNum=" + $(e.target).val() + "&SetValue=" + $(e.target).is(":checked"));
        $.ajax({
          type: "POST",
          url: "cfc/basic.cfc?method=SetNotDupe",
          data: "indivNum=" + $(e.target).val() + "&SetValue=" + $(e.target).is(":checked"),
          error: function (xhr, textStatus, errorThrown) {
            // show error alert(errorThrown);
          }
        });
        alert($(e.target:nth-child(-10)).css);
      });

<td class="dupegroup">#dupe_group_number#</td>
<td><input type="checkbox" name="UserIDList" value="#userid#" /></td>
<td><a href="#request.controlURL#individuals/?fa=viewIndiv" target="_blank">#userid</td>
<td>#lastname#</td>
<td>#firstname#</td>
<td>#nickname#</td>
<td>#companyname#</td>
<td>#address1#</td>
<td>#zipcode#</td>
<td>#state#</td>
<td>client</td>
<td align="center"><input class="notdupe" type="checkbox" name="indivID" value="#userid#" checked /></td>

$firstTD = $(this).parent().siblings().first()

$(this).closest('tr').find('td:first')

$('.notdupe').live('click', function (e) {
        //alert("indivNum=" + $(e.target).val() + "&SetValue=" + $(e.target).is(":checked"));
        $.ajax({
          type: "POST",
          url: "cfc/basic.cfc?method=SetNotDupe",
          data: "indivNum=" + $(e.target).val() + "&SetValue=" + $(e.target).is(":checked"),
          error: function (xhr, textStatus, errorThrown) {
            // show error alert(errorThrown);
          }
        });
        alert($(this).closest('tr').find('td:first').text());
      });

$td_you_want = $(this).closest('tr').children('td').first();