title: how to enable text area or input type="text" using jquery
body: <p>am having the code as follows when clicked on radio button yes the text box has to be enabled if not it has to be disabled. please someone help me. thanks</p>
  
  <pre><code>&lt;div class="label_left"&gt;
      &lt;label&gt;Does the tourism office operate on a biennial budget? : (Y/N)&lt;/label&gt;
  &lt;/div&gt;
  &lt;div class="text_right"&gt;
      &lt;br&gt;
      &lt;br&gt;
      &lt;input type="radio" id="high" name="high" /&gt;
      &lt;label&gt;Y&lt;/label&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;
      &lt;input type="radio" id="high" name="high" /&gt;
      &lt;label&gt;N&lt;/label&gt;
      &lt;br /&gt;
      &lt;br /&gt;
      &lt;br /&gt;
  &lt;/div&gt;
  &lt;div class="label_left"&gt;
      &lt;label&gt;If YES,please indicate when the current biennial budget began: (mm/dd/yy)&lt;/label&gt;
  &lt;/div&gt;
  &lt;div class="text_right"&gt;
      &lt;br&gt;
      &lt;br&gt;
      &lt;input type="text" name="date_biennial_budget" id="date_biennial_budget" value="" size="30" /&gt;
      &lt;br /&gt;
      &lt;br /&gt;
      &lt;br /&gt;
  &lt;/div&gt;
  </code></pre>