On button click select prev() div
<p>Can someone please tell me what is wrong with the below function? I am trying to change the css of the prev() div on the click of the #up button. (I know this is noob stuff) Thanks</p>

<p>Joey</p>

<pre><code>$.fn.expand = function() {
        $('#up').click(function() {
         $("#frame.#two").previousSibling().css("height" , "80%");
        }
        });
</code></pre>
