Disable the first value in the select list on checkbox click
<pre><code>  $('#bit_IsModule').click(function () {
        if ($('#bit_IsModule:checked').val() == "true")

            $("#featurename").slideUp();
        else
            $("#featurename").slideDown();
    });
</code></pre>

<p>I want to disable the first value in the select list on the checkbox click ? how can i do that </p>
