title: hidden input change event
body: <p>How can I detect a change of the value of a hidden input? I've already tried these approaches without success:</p>
  
  <pre><code>$('#id_inpout').live('change',function () {
          var id_el = $(this).attr('id');
          alert(id_el);
      });
  </code></pre>
  
  <p>and </p>
  
  <pre><code>$('#id_inpout').change(function () {
          var id_el = $(this).attr('id');
          alert(id_el);
      });
  </code></pre>
  
  <p>and</p>
  
  <pre><code>$('#id_inpout').bind('change',function () {
          var id_el = $(this).attr('id');
          alert(id_el);
      });
  </code></pre>