title: close previous jGrowl notifications before showing a new one
body: <p>I have a simple app that executes <code>$.jGrowl("loading");</code>.  Then the data is displayed <code>$.jGrowl("blah blah blah data goes here");</code> after crunching data which can take 1 -5 seconds.</p>
  
  <p>I've seen a <a href="https://stackoverflow.com/questions/1327527/jgrowl-how-can-i-limit-my-interface-to-one-message-at-a-time">post</a> that mentions using the default.pool to only display one message at a time.  The format I want is:  </p>
  
  <ul>
  <li>Show box 1</li>
  <li>crunch data</li>
  <li>close box 1</li>
  <li>show box 2</li>
  </ul>
  
  <p>Is there a jGrowl function that can be initiated to close all notifications?</p>
  
  <p><em>UPDATE</em><br>
  according to the source example you can do the folowing<br>
  <code>$('#loading').jGrowl('&lt;img src="images/loading.gif" alt="Loading..." /&gt;');</code><br>
  then call to close it<br>
  <code>$('#loading').jGrowl('shutdown');</code><br>
  <code>&lt;div id="loading" class="top-right"&gt;&lt;/div&gt;</code>
  that does hide the loading growl, however it also hide subsequent notifications in that region.</p>