title: How to display message for incorrect captcha
body: <p>I was searching everywhere but no results(maybe I didn't know what to search).My problem is to display a message for the incorrect captcha solution like this(marked with red): </p>
  
  <p><img src="https://i.stack.imgur.com/nLNW2.png" alt="Example Pic" title="Example Pic"></p>
  
  <p>The captcha is displayed using an ExtJs panel:</p>
  
  <pre><code>{
      xtype:'panel',
      id:'reCaptcha-panel',
      html:'&lt;div id="recaptcha"&gt;&lt;/div&gt;',
      width:325,
      height:130,
      border:false,
      listeners:{
         afterrender:function(){
               Recaptcha.create(apiKey,
                                Ext.getDom('recaptcha'),
                                {
                                    theme : 'blackglass',
                                    lang:'en',
                                    callback: Recaptcha.focus_response_field
                                });
        }
     }
  }
  </code></pre>
  
  <p>The panel is inside an ExtJs form(the script is included in a .html) and everything here works.On the server-side the captcha solution is checked using a java HttpURLConnection post request on google's servers which returns "incorrect-captcha-sol" only when the client's solution is incorrect.I need to know what to do for showing the message as in the picture above.</p>