title: jquery -how to measure height of element with display:none?
body: <p>If I have an element set to <em>display:none</em>.</p>
  
  <p>Firebug tells me the element has:<br>
   <em>margin-top/bottom: 20px</em><br>
   <em>padding-top/bottom: 20px</em><br>
  <em>height: -22px</em></p>
  
  <p>If the element is set to  <em>display:block</em> height changes to this:  </p>
  
  <p><em>height: 73px</em> </p>
  
  <p>I need to retrieve the -22px via Jquery, but I'm always getting the 73px no matter what display is set to. Is there a way to get the -22px?</p>
  
  <p>Thanks!</p>