title: keyup events using class instead of id
body: <p>If I have 2 textboxes, without using id's, how do I determine which textbox is firing off "keyup" events?</p>
  
  <p>For various reasons I need to use classes instead of id's, where the class name is the same for both textboxes.</p>
  
  <p>Infact, I could have the same textbox on the screen many times with the same class name.</p>
  
  <p>The HTML looks something like this</p>
  
  <pre><code>&lt;div class="outer_div"&gt;
     &lt;input type="text" class="mytextbox" /&gt;
     &lt;div class="inner_div"&gt;&lt;/div&gt;
  &lt;/div&gt;
  
  &lt;div class="outer_div"&gt;
     &lt;input type="text" class="mytextbox" /&gt;
     &lt;div class="inner_div"&gt;&lt;/div&gt;
  &lt;/div&gt;
  
  &lt;div class="outer_div"&gt;
     &lt;input type="text" class="mytextbox" /&gt;
     &lt;div class="inner_div"&gt;&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>