Enable/Disable a dropdownbox in jquery
<p>I am new to jquery and now want to enable and disable a dropdownbox through a checkdown box. The code below shows my dropdown and checkdown box </p>

<pre><code>              &lt;select id="dropdown" style="width:200px;"&gt;
              &lt;option value="feedback" name="aft_qst"&gt;After Quest&lt;/option&gt;
              &lt;option value="feedback" name="aft_exm"&gt;After Exam&lt;/option&gt;
              &lt;/select&gt;

              &lt;input type="checkbox" id="chkdwn2" value="feedback"/&gt;
</code></pre>

<p>then How should I write jquery for this ? Also searching for a good documentation/study material for jquery. </p>
