title: Display other field onchange
body: <p>I have here selectbox with option value USA and OTHERS. What I need is if I choose OTHERS on Selectbox1 the Selectbox2 should be display none and textbox1 comes out. Other problem also is it's name field, If I POST the value of <code>name="cboState"</code> . How to remove the name of a field? Any help will appreciate.</p>
  
  <pre><code>&lt;form action="try.php" method="POST"&gt;
  &lt;select id="cboCountry"&gt;
      &lt;option value="USA"&gt;USA&lt;/option&gt;
      &lt;option value="OTHERS"&gt;OTHERS&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p><strong>Selectbox 2</strong></p>
  
  <pre><code>&lt;select id="cboState" name="cboState"&gt;
      &lt;option value="Alabama"&gt;Alabama&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p><strong>Textbox 1</strong></p>
  
  <pre><code>&lt;input type="text" id="cboState" name="cboState"/&gt;
  &lt;input type="submit"&gt;
  &lt;/form&gt;
  </code></pre>