Found this in the jquery source, how does it work?
<p>All this is one expression. What exactly gets put inside div in the end? What's it called when you have a bunch of comma delimited expressions?</p>

<pre><code>var div = document.createElement( "div" ),
    documentElement = document.documentElement,
    all,
    a,
    select,
    opt,
    input,
    tds,
    events,
    eventName,
    i,
    isSupported;
</code></pre>
