function ZmenitObrazek(obrazek, vyska, sirka) {
	var cilovyImg = document.getElementById('obr_main');
	cilovyImg.style.visibility = 'hidden';
	cilovyImg.onload = ZobrazitObrazek;
	cilovyImg.src = './pictures/' + obrazek;
}

function ZobrazitObrazek() {
	var cilovyImg = document.getElementById('obr_main');
	cilovyImg.style.visibility = 'visible';
}

function Identicka() {
	if(document.getElementById('identicka').checked) {
		document.getElementById('fakturacni').style.display = 'block';
	} else {
		document.getElementById('fakturacni').style.display = 'none';
	}
}