"This" not working on an input field on focus
<p>I have the following code to get me the id of what ever input is in focus:</p>

<pre><code>$('#searchColumnFields input').focus(function(){
    thisId = $(this).css('id');
    $(this).css('border-color', '#CCEBFF');
    pos = $(this).position() ;
    $('#searchHelper').html(thisId);
    $('#searchHelper').fadeIn(250).css('left', pos.left-20);
})
</code></pre>

<p>However, <code>thisId</code> keeps coming back null.</p>

<p>What am I doing wrong?</p>
