How can I get the height of the baseline of a certain font?
<p>I'm hoping to be able to find the height of the <a href="http://en.wikipedia.org/wiki/Baseline_%28typography%29" rel="nofollow">baseline</a> of a piece of text in a div using javascript. </p>

<p>I can't use a predefined font, because many of my users will be using a larger font setting in their browser.</p>

<p>How can I do this in javascript?</p>
