var eventNow = '';

function showEvent(eve) {
  if (eventNow != eve && eventNow != '') {
    var eventLocked = document.getElementById('event-' + eventNow);
    eventLocked.style.display = 'none';
  }

  var eventShow = document.getElementById('event-' + eve);
  eventShow.style.display = 'block';
}

function hideEvent(eve) {
  if (eve != eventNow) {
    if (eventNow != '') {
      var eventLocked = document.getElementById('event-' + eventNow);
      eventLocked.style.display = 'block';
    }

    var eventShow = document.getElementById('event-' + eve);
    eventShow.style.display = 'none';
  }
}

function lockEvent(eve) {
  if (eventNow != '') {
    var day1 = document.getElementById('day-' + eventNow);
    var event1 = document.getElementById('event-' + eventNow);

    day1.style.color = 'black';
    event1.style.display = 'none';
  }

  if (eventNow != eve) {
    var day2 = document.getElementById('day-' + eve);
    var event2 = document.getElementById('event-' + eve);

    day2.style.color = '#fff';
    event2.style.display = 'block';
    eventNow = eve;
  } else {
    eventNow = '';
  }
}