title: how to enable textbox based on some choice
body: <p>Enabling <code>txtEmployer</code> only when Employment type is contract or full time, should be deactivated for Full time.</p>
  
  <pre><code>&lt;div&gt;
    &lt;select id="SelectEmployment"&gt;
      &lt;option value="Select Employment"&gt;Employment Type&lt;/option&gt;
      &lt;option value="Full-time"&gt;Full-time&lt;/option&gt;
      &lt;option value="Part-time"&gt;Part-time&lt;/option&gt;
      &lt;option value="Contract"&gt;Contract&lt;/option&gt;
      &lt;option value="Fixed term"&gt;Fixed term&lt;/option&gt;
    &lt;/select&gt;
  &lt;/div&gt;
  &lt;div&gt;
    &lt;input type="text" id="txtEmployer" value="Employer" class="txtinline water"/&gt;
  &lt;/div&gt;
  </code></pre>