Including JS in head or immediately after opening body tag
<p>What is the difference between including Javascript in the <code>&lt;head&gt;</code> as opposed to immediately after the OPENING <code>&lt;body&gt;</code> tag?</p>

<p>Facebook Like widget is one example where they suggest placing the code immediately after the opening <code>&lt;body&gt;</code> tag.  SiteCatalyst also suggests this for their analytics code.</p>

<p>While there is an obvious difference between including the code in the <code>&lt;head&gt;</code> element as opposed to right before the closing <code>&lt;/body&gt;</code> tag, I'm not sure what the difference is between the <code>&lt;head&gt;</code> and immediately after the opening <code>&lt;body&gt;</code> tag.    </p>
