title: How to get div height after the action slider down or slider up?
body: <p>Code in here: <a href="http://jsfiddle.net/T6HnW/1/" rel="nofollow">jsfiddle Demo</a></p>
  
  <p>I wanna to get the <code>div#content</code> height when it finish the action of <code>slider down/up</code>.</p>
  
  <p>For example, in demo, I type some words, they make the div height is <code>36px</code>, so if I click <code>slider down</code>, I need get the value <code>36</code>, and if I click <code>slider up</code>, I need return the value <code>0</code>. Thanks. </p>