code: function onKeydown(event)
  {
    // Gets the keycode, then stores it
    var keyCode = event.which;
  
    // Checks which action matches with the current keycode
    switch (keyCode)
    {
      case 65: keyA();
      break;
  
      case 66: keyB();
      break;
  
      case 67: keyC();
      break;
  
      case 68: keyD();
      break;
  
      case 69: keyE();
      break;
  
      case 70: keyF();
      break;
  
      case 71: keyG();
      break;
  
      case 72: keyH();
      break;
  
      case 73: keyI();
      break;
  
      case 74: keyJ();
      break;
  
      case 75: keyK();
      break;
  
      case 76: keyL();
      break;
  
      case 77: keyM();
      break;
  
      case 78: keyN();
      break;
  
      case 79: keyO();
      break;
  
      case 80: keyP();
      break;
  
      case 81: keyQ();
      break;
  
      case 82: keyR();
      break;
  
      case 83: keyS();
      break;
  
      case 84: keyT();
      break;
  
      case 85: keyU();
      break;
  
      case 86: keyV();
      break;
  
      case 87: keyW();
      break;
  
      case 88: keyX();
      break;
  
      case 89: keyY();
      break;
  
      case 90: keyZ();
      break;
  
      case 96: key0();
      break;
  
      case 97: key1();
      break;
  
      case 98: key2();
      break;
  
      case 99: key3();
      break;
  
      case 100: key4();
      break;
  
      case 101: key5();
      break;
  
      case 102: key6();
      break;
  
      case 103: key7();
      break;
  
      case 104: key8();
      break;
  
      case 105: key9();
      break;
  
      // Gets the jim help element to toggle the none class
      default:
      document.getElementById('jim-help').classList.toggle('none');
    }
  }
docs: *******************************************************\
  Chooses the function to execute from the keyboard event
  @param {Object} event => the keyboard event