title: Change Visibility with Timer
body: <p>I'm trying to implement something quite simple, but I can figure out how to do it. And I can't find a solution online anywhere.</p>
  
  <p>I'd like an image to be visible and then switch to hidden after a few seconds have elapsed. (If page is refreshed, it should be visible again for allotted time.)</p>
  
  <p>Is there a way to do this easily through HTML and/or Java script?</p>
  
  <p>Your help is <em>greatly</em> appreciated!</p>