title: Why always UpperCase in my code?
body: <pre><code>&lt;script type="text/javascript" src="jquery-1.3.2.js"&gt;&lt;/script&gt;
  &lt;input id=a type="text" value='sss'/&gt;
  &lt;script type="text/javascript"&gt;
      $('#a').keyup(
    function(event){
     alert(String.fromCharCode(event.which))
    })
  &lt;/script&gt;
  </code></pre>
  
  <p>you can test this code in your brower,</p>
  
  <p>and it always alert UpperCase of a charcode.</p>