function showDot(dave) {
hideDots();

document.getElementById("dot" + dave).style.visibility='visible';

}

function hideDot(dave) {
document.getElementById("dot" + dave).style.visibility='hidden';

}


function hideDots() {
hideDot('01');
hideDot('02');
hideDot('03');
hideDot('04');
hideDot('08');
hideDot('10');
hideDot('11');
hideDot('12');
hideDot('13');
hideDot('14');
hideDot('15');
hideDot('16');
hideDot('17');
hideDot('18');
}


function showEvent(dave) {
hideEvents();

document.getElementById("event" + dave).style.visibility='visible';
}

function hideEvent(dave) {
document.getElementById("event" + dave).style.visibility='hidden';

}


function hideEvents() {
hideEvent('calendar');
hideEvent('01');
hideEvent('02');
hideEvent('03');
hideEvent('04');
hideEvent('08');
hideEvent('10');
hideEvent('11');
hideEvent('12');
hideEvent('13');
hideEvent('14');
hideEvent('15');
hideEvent('16');
hideEvent('17');
hideEvent('18');
}