title: multiple button click event handler
body: <p>I have the following in my html template</p>
  
  <pre><code>&lt;div id="add"&gt;
      &lt;fieldset&gt;
      &lt;/fieldset&gt;
      &lt;input type="button"  id="cancel" value="AddCancel"/&gt;
  &lt;/div&gt;
  &lt;div id="update"&gt;
      &lt;fieldset&gt;
      &lt;/fieldset&gt;
      &lt;input type="button" id="cancel" value="UpdateCancel"/&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>The events are wired up with backbone for the buttons. What I am running into is that i have to wire up <code>AddCancel</code> event and <code>UpdateCancel</code> event and so on.</p>
  
  <p>Instead of wiring up each cancel button event, is there a way i could have 1 <code>cancel</code> button event and handler which could identify which div the cancel button that was clicked belongs to?</p>