function showPopup() {
    var object = document.getElementById('tip').style;
    object.display = 'block'; 
    
    var object2 = document.getElementById('copy').style;
    object2.display = 'none';
}

function hidePopup() {
    var object = document.getElementById('tip').style;
    object.display = 'none';

    var object2 = document.getElementById('copy').style;
    object2.display = 'block';
}