How to disable one radio input from radio group?
<p>How can i disable the one radio input from the radio group ?</p>

<pre><code>&lt;input type="radio" name="radiogrp" value="op1" checked="checked"&gt;Option1
&lt;input type="radio" name="radiogrp" value="op2"&gt; Option2
&lt;input type="radio" name="radiogrp" value="op3" &gt; Option3
&lt;input type="radio" name="radiogrp" value="op4"&gt; Option4
</code></pre>

<p>My question is i want to disable option1 after clicking on any other button</p>

<p>For example:</p>

<blockquote>
  <p>when i select option2, than option1 should be disabled</p>
</blockquote>
