I send variable to AJAX for editing some data in table, but every time when I clicked in any rows JS receive my first clicks variable 

2. <table id="link-table" cellpadding="0" cellspacing="0" border="0" class="display  dt2">
3. <thead>
4. <tr>
5. <th>a</th>
6. <th>b</th>
7. </tr>
8. </thead>
9. <tbody>
10. <?php
11. $stmt = "SELECT a, b FROM ast.cdr ORDER BY a desc";
12. $result = mysql_query( $stmt, $conn );
13. while($row = mysql_fetch_array($result, MYSQL_ASSOC)){
14. $id= $row['src'];
15.                
16. ?>
17. <tr class="gradeX">
18.                
19.                
20. <td><span name="<?php echo $row['a'];?>"><?php echo $row['a'];?><span></span></td>
21. <td><?php echo $row['billsec']?>.сек</td>
22. <td>
23. <a href="#" class="sepV_a fd2" title="Edit"><img src="img/ico/pencil_gray.png" alt="" /></a>
24. <a href="#" class="sepV_a chist" title="View"><img src="img/ico/preview_gray.png" alt="" /></a>
25. <a href="#" class="sepV_a delete_button" title="Del"><img src="img/ico/trashcan_gray.png" alt="" /></a>
26. </td>
27. </tr>
28. <?php
29. }
30. ?>
31. </tbody>
32. </table>

and my JS code 

3. $(".fd2").fancybox({
4.                 href : 'search_result.php',
5. ajax : {
6. type : "POST",
7.                 cache : false,
8.                 data:{search_item : name},
9.                 success: function(result)
10.                     {
11.                     console.log(result);
12.                     }
13. },
14. });