title: How does jQuery implement hide() and show()
body: <p>Do they set <code>display: none</code> or <code>visibility: hidden</code>?</p>
  
  <p>I'm pretty sure <code>display: none</code> takes the element out of the normal flow, whilst <code>visibility: hidden</code> just hides the element but still has a reserved space for it.</p>
  
  <p>Should I just go download the unpacked version and study it or does someone have a quick answer?</p>