z-index problem with helper clone
<p>This is my code (please see <a href="http://jsfiddle.net/VCfSc/1/" rel="nofollow">http://jsfiddle.net/VCfSc/1/</a>):</p>

<pre><code>$('.first').draggable({
    cancel: null,
    helper: 'clone'
});

$('.second').droppable({
    over: function(event, ui) {
        $(this).css('z-index', 1);
        ui.helper.css('z-index', 0);
    }
});
</code></pre>

<p>I am trying to have the helper clone go <em>under</em> the droppable element when it is dragged over it. What am I doing wrong?</p>
