gistfile1.html

<form class="my_form">
  <a class="my_link"></a>
</form>

<script type="text/javascript">
$('.my_form').live('ajax:success',
  // this gets triggered when I click on my_link, I don't want that
)

$('.my_link').live('ajax:success',
  // I want this to not trigger the my_form event
)
</script>