title: jquery tooltips: append/remove vs. show/hide
body: <p>I'm showing tooltips like this</p>
  
  <pre><code>$(clickedElement).append('&lt;span id="activeHelpTip" class="helpTip"&gt;Loading help...&lt;/span&gt;');
  $('#activeHelpTip').remove();
  </code></pre>
  
  <p>A colleague suggested that on page load I append ALL possible tooltips with visibility none, and show/hide them on demand.</p>
  
  <p>What's the difference?  Who cares?</p>
  
  <p>Edit: Is it relevant that tooltips are provided by an ajax service?</p>