title: How to integrate BotBoot captcha and disable submit button until captcha is correct?
body: <p>I call upon the amazing JavaScript Guru Masters once again!
  Please heed my call as I am failing again~</p>
  
  <p>So I'm using BotBoot JavaScript Captca, it does the "Are you Human? 6 + 8 = ?" question. I would like the submit button to be disabled until the recaptca passes true.</p>
  
  <p>So my botboot.js file looks like this:</p>
  
  <pre><code>var a = Math.ceil(Math.random() * 10);
  var b = Math.ceil(Math.random() * 10);       
  var c = a + b;
  function DrawBotBoot()
  {
      document.write("&lt;label for='botboot' class='contact_label'&gt;What is "+ a + " + " + b +"?&lt;/label&gt;");
      document.write("&lt;input name='botboot' id='BotBootInput' type='number' class='input_field' maxlength='2' size='2' required&gt;");
  }    
  function ValidBotBoot(){
      var d = document.getElementById('BotBootInput').value;
      if (d == c) return true;        
      return false;  
  }
  </code></pre>
  
  <p>My form is this:</p>
  
  <pre><code>&lt;script src="js/botboot.js"&gt;&lt;/script&gt;
  &lt;form action="send-mail.php" class="contact" method="post" parsley-validate&gt;
      &lt;label for="name" class="contact_label"&gt;Name&lt;/label&gt;
      &lt;br&gt;
      &lt;input name="name" type="text" class="input_field" required&gt;&lt;br&gt;
  
      &lt;label for="email" class="contact_label"&gt;Email&lt;/label&gt;
      &lt;br&gt;
      &lt;input name="email" type="email" class="input_field" parsley-trigger="blur" parsley-focus="first" required&gt;&lt;br&gt;
  
      &lt;label for="phone" class="contact_label"&gt;Phone&lt;/label&gt;
      &lt;br&gt;
      &lt;input name="phone" type="tel" class="input_field" parsley-trigger="change"&gt;&lt;br&gt;
  
      &lt;label for="message" class="contact_label"&gt;Message&lt;/label&gt;
      &lt;br&gt;
      &lt;textarea name="message" class="input_field_message" parsley-trigger="keyup" parsley-rangelength="[20,200]" parsley-focus="last" required&gt;&lt;/textarea&gt;&lt;br&gt;
  
      &lt;script&gt;DrawBotBoot()&lt;/script&gt;&lt;br&gt;
  
      &lt;submit class="btn btn-lg btn-default cta"&gt;Submit&lt;/submit&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>Thank you for your time, skills, and brain power JavaScript Guru Masters!</p>