Show hidden images temporarily if sharing to Pinterest (using AddThis)

gistfile1.js

// Don't forget to include AddThis.
// It's actually really good now so you should be using it.

$images = [ ]; // Or wherever your hidden images are.

// Show images temporarily if sharing to Pinterest
// (Because Pinterest won't see the backgrounds.)
if(typeof addthis !== 'undefined') {
  addthis.addEventListener('addthis.menu.share', function(e) {
    if (e.type == 'addthis.menu.share' && e.data.service === "pinterest_share") { 
      $images.show().addClass('visuallyhidden');
      setTimeout(function() {
       $images.hide().removeClass('visuallyhidden');
      }, 2000); // Give pinterest time to load.
    }
  });
}