disable textbox using jquery?
<p>I have three radio buttons with same name and different values.When I click the third radio button the checkbox and textbox going to be disabled.but when I choose other two radio buttons it must be show.I need the help in Jquery.Thanks in advance....</p>

<pre><code>&lt;form name="checkuserradio"&gt;
    &lt;input type="radio" value="1" name="userradiobtn" id="userradiobtn"/&gt; 
    &lt;input type="radio" value="2" name="userradiobtn" id="userradiobtn"/&gt;
    &lt;input type="radio" value="3" name="userradiobtn" id="userradiobtn"/&gt;
    &lt;input type="checkbox" value="4" name="chkbox" /&gt;
    &lt;input type="text" name="usertxtbox" id="usertxtbox" /&gt;
&lt;/form&gt;
</code></pre>
