title: Captcha reload doesn't work in IE 9
body: <p>I have a simple javascript function works perfectly in chrome, but in Internet Explorer don't do anything. I can't figure it out why.</p>
  
  <p>The function:</p>
  
  <pre><code>function captcha()
  {
  img = document.getElementById("captcha");
  img.src = "captcha.asp";
  }
  </code></pre>
  
  <p>I have a form in the html, where is a button with an onClick event which call the captcha function.</p>