Show/Hide Barley Icon - http://getbarley.com

gistfile1.js

// Hide the Barley Icon by default
// Show the Barley Icon on ESC Key Press

// Make sure DOM is loaded
document.addEventListener('DOMContentLoaded', function(){

  // The Barley Icon Element
  var barleybar = document.getElementById('barley-bar');

  // Hide By Default
  barleybar.style.display = 'none';
  
  // Listen for Escape Key Press and Show Icon
  document.addEventListener('keydown', function (e) {
    if ( e.keyCode === 27 ) {
      barleybar.style.display = 'block';
    }
  });

});