title: jQuery detect visible but hidden elements
body: <p>This seems like it should be fairly easy - but I can't find the right selector for it</p>
  
  <p>According to the docs (<a href="http://api.jquery.com/hidden-selector/" rel="noreferrer">http://api.jquery.com/hidden-selector/</a> and <a href="http://api.jquery.com/visible-selector/" rel="noreferrer">http://api.jquery.com/visible-selector/</a>)...</p>
  
  <p>Elements can be considered hidden for several reasons:</p>
  
  <p><strong>An ancestor element is hidden, so the element is not shown on the page.</strong></p>
  
  <p>What I want to detect is "this element is visible, but is contained in a hidden parent".  Ie, if I made the parent visible, this element would also be visible.</p>