Get height of a DIV that changes height dynamically
<p>EXAMPLE: <a href="http://jsbin.com/ewiko4/5/" rel="nofollow">http://jsbin.com/ewiko4/5/</a></p>

<p>So I have some Dynamic divs that I need to figure out the height of when they change. I can get the height when the document loads but it won't update.</p>

<p><strong>In the example I've added a make bigger button but irl it will be changed via jq &amp; ajax</strong></p>

<p>Yup, I can't add a callback to the animation button because it wont't be there.</p>
