How to disable initial mouseover
<p>With jQuery (or pure javascript), if you set a <code>mouseover</code> handler, it will be triggered even if the mouse is initially on the element. How to disable that?</p>

<p>For example, look at facebook - place your mouse over the name of a friend in the feed. A hovercard appears. Now refresh the page (without moving the mouse; F5) - the hovercard does not appear.</p>
