Fade in div after scrolling
<p>I need to be able to fadein/fadeout a div depending on the amount of px scrolled by the user. Here is the existing jquery I have. I can toggle its view but i'd like to fade that toggle. What is the correct method here?</p>

<pre><code>$("#subOverlay").hide();

$(window).bind('scroll', function(){
    $("#subOverlay").toggle($(this).scrollTop() &gt; 520);
});
</code></pre>

<p>Thanks</p>
