find elements that are stacked under (visually) an element in jquery
<p>if i have 2 divs (z index is not assigned), one layered over the over, can i use the reference to the top div to find which div is below it?</p>

<p>as far as the DOM structure goes, these two divs would be siblings. but visually they are stacked on one another. </p>

<p>here's an example:</p>

<pre><code>&lt;body&gt;
&lt;div id="box1" style="background:#e0e0e0;height:100px;width:100px;"&gt;&lt;/div&gt;
&lt;div id="box2" style="background:#000000;height:100px;width:100px;margin-top:-50px;"&gt;&lt;/div&gt;
&lt;/body&gt;
</code></pre>

<p>which results in this:
<img src="http://i.stack.imgur.com/21ddW.png" alt="enter image description here"></p>

<p>so i'm trying to figure out, when having the black div, box2, a way to return box1 in jquery (using selectors), because box1 is beneath box2, using jquery.</p>
