Selector: selecting next a-tag

Selector: selecting next a-tag

Hi,

I was reading some selector tutorials but still don't know, how to change
another a-tag in my html structure.

Here is my html:
...<tr>
   <td class="no_border" colspan="6">
     <table width="100%" cellspacing="0">
      <tr>
         <td width="149"><a class="btn_details" href="#">Field1</a></td>
         <td width="118">Field2</td>
         <td width="170">Field3</td>
         <td width="187">Field4</td>
         <td>Field5</td>
         <td><a class="btn_info" href="#">info</a></td>
       </tr>
      </table>...


When I click the a.btn_details then a.btn_info should change it's back-
ground-position. But only the next a.btn_info NOT all of them as I have
a table. Therefore I wrote the following code:
$('a.btn_details').toggle(
      function() {
         $(this).css({backgroundPosition: '0 -17px'});
                        $(this)?????????????????????????????????????

How can I go through DOM from my first a-tag over the tds to the first
following btn_info?

thx
T.C.