I have this table with some dependents information and there is a add and delete button for each row to add/delete additional dependents. When I click "add" button, a new row gets added to the table, but when I click the "delete" button, it deletes the header row first and then on subsequent clicking, it deletes the corresponding row.

Here is what I have:

Javascript code

   function deleteRow(row){
      var d = row.parentNode.parentNode.rowIndex;
      document.getElementById('dsTable').deleteRow(d);
   }

HTML code

<table id = 'dsTable' >
      <tr>
         <td> Relationship Type </td>
         <td> Date of Birth </td>
         <td> Gender </td>
      </tr>
      <tr>
         <td> Spouse </td>
         <td> 1980-22-03 </td>
         <td> female </td>
         <td> <input type="button" id ="addDep" value="Add" onclick = "add()" </td>
         <td> <input type="button" id ="deleteDep" value="Delete" onclick = "deleteRow(this)"  </td>
      </tr>
       <tr>
         <td> Child </td>
         <td> 2008-23-06 </td>
         <td> female </td>
         <td> <input type="button" id ="addDep" value="Add" onclick = "add()"</td>
         <td>  <input type="button" id ="deleteDep" value="Delete" onclick = "deleteRow(this)" </td>
      </tr>
   </table>