Does .css() alter properties in the HTML or an external stylesheet?
<p>Newbie jquery: does the <code>.css()</code> function alter css properties of an element if the properties are included within the HTML or does it locate and subsequently alter the element from an external stylesheet (if there is one)? </p>

<p>e.g. </p>

<pre><code>$('#main').css('background-color', '#eee'); 
</code></pre>

<p>Since I have no inline <code>&lt;style&gt;</code> tags within my HTML, does the function look up the <code>#main</code> class in the linked external stylesheet? </p>
