Can't get modal events to fire

[Sebarry]

Hi,

I am trying to call a function when a modal window is closed but it's not 
working. My code is:

<script type="text/javascript">

        $('#myModal').bind('hidden', function () {
            alert("blah");
        });

</script>

<div id="myModal" class="modal hide fade">
    <div class="modal-header">
                      <a class="close" data-dismiss="modal">×</a>
                      <br />
                       Test
                    </div>
    <div class="modal-body">
      <p>Modal body</p>
    </div>
    <div class="modal-footer">
      <a href="#" class="btn primary">Primary</a>
      <a href="#" class="btn secondary">Secondary</a>
    </div>
  </div>
  
    <button type="button" data-toggle="modal" data-target="#myModal">Launch 
modalbggg</button>

Any ideas?

Cheers,

Sean