function updateClock() {
	var currentTime = new Date(); 	
	var currentDay = currentTime.getDate();
	var currentMonth = currentTime.getMonth()+1;
	var currentYear = currentTime.getFullYear();
	var currentHours = currentTime.getHours(); 
	var currentMinutes = currentTime.getMinutes(); 
	var currentSeconds = currentTime.getSeconds();
	currentMinutes = (currentMinutes < 10 ? "0" : "") + currentMinutes; 
	currentSeconds = (currentSeconds < 10 ? "0" : "") + currentSeconds;
	var currentTimeString = currentDay+"."+currentMonth+"."+currentYear+" "+currentHours+":"+currentMinutes+":"+currentSeconds;
	document.getElementById("clock").innerHTML = currentTimeString;
}

function setFontSize(fontSize, unit) {
	document.body.style.fontSize = fontSize + unit;
}