Self invoking function that can be called as well
<p>The following code works, but I'd like to use the self-invoking function syntax when declaring it instead of calling it explicitly on the last line:</p>

<pre><code>var ShowMe = function() {
    if ($('input:checkbox:checked').length) {
        $('#Save').fadeIn('slow');
    } else {
        $('#Save').hide();
    }
};
$('input:checkbox').on('click',ShowMe);
ShowMe();
</code></pre>
