title: Table onkeyup event is not firing in Firefox and Chrome
body: <p>Following code works fine with IE, but doesn't work with other browsers.</p>
  
  <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
  &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
  &lt;head&gt;
      &lt;title&gt;&lt;/title&gt;
      &lt;script type="text/javascript"&gt;
          function OnLoad() {
              var tbl = document.getElementById("tbl");
              tbl.addEventListener("keyup", OnKeyUp);
              tbl.focus();
          }
  
          function OnKeyUp(event) {
              alert(event.keyCode);
          }
      &lt;/script&gt;
  &lt;/head&gt;
  &lt;body onload="OnLoad()"&gt;
      &lt;table id="tbl"&gt;
          &lt;tr&gt;
              &lt;td&gt;
                  1
              &lt;/td&gt;
              &lt;td&gt;
                  2
              &lt;/td&gt;
              &lt;td&gt;
                  3
              &lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
              &lt;td&gt;
                  4
              &lt;/td&gt;
              &lt;td&gt;
                  5
              &lt;/td&gt;
              &lt;td&gt;
                  6
              &lt;/td&gt;
          &lt;/tr&gt;
      &lt;/table&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>