A table like the following haw would I access the cells of a row?

 

<table id='mytable' >
 <tr>
  <td><input id='chkbx0' type='checkbox' checked /></td>
  <td>Boston</td>
  <td><input id='ch0' type='text' value=23 checked /></td>
  <td><input id='chkbx0' type='checkbox' checked /></td>
  <td>Charlestown</td>
  <td><input id='ch1' type='text' value=33 checked /></td>
  <td><input id='chkbx0' type='checkbox' checked /></td>
  <td>New York</td>
  <td><input id='ch2' type='text' value=3 checked /></td>
 </tr>
 <tr>
  <td><input id='chkbx0' type='checkbox' checked /></td>
  <td>Los Angles</td>
  <td><input id='ch0' type='text' value=23 checked /></td>
  <td><input id='chkbx0' type='checkbox' checked /></td>
  <td>Funky Town</td>
  <td><input id='ch1' type='text' value=33 checked /></td>
  <td><input id='chkbx0' type='checkbox' checked /></td>
  <td>Harbor Point</td>
  <td><input id='ch2' type='text' value=3 checked /></td>
 </tr>
 <tr>
  <td><input id='chkbx0' type='checkbox' checked /></td>
  <td>London</td>
  <td><input id='ch0' type='text' value=23 checked /></td>
  <td><input id='chkbx0' type='checkbox' checked /></td>
  <td>Alston</td>
  <td><input id='ch1' type='text' value=33 checked /></td>
  <td><input id='chkbx0' type='checkbox' checked /></td>
  <td>Green Town</td>
  <td><input id='ch2' type='text' value=3 checked /></td>
 </tr>
</table>