function checkContactForm() {
	
	var message = 'Políčka označené * musia byť vyplnené:\n';
	var formOK = true;
	
	if (document.getElementById('name').value == '') {
		message += 'meno\n';
		formOK = false;
	}	
	if (document.getElementById('email').value == '') {
		message += 'e-mail\n';	
		formOK = false;
	}	
	if (document.getElementById('message').value == '') {
		message += 'otázka\n';		
		formOK = false;
	}	
	
	if (formOK) {
		return true;
	}	
	else {
		alert(message);
		return false;
	}
}

function checkContactFormEN() {
	
	var message = 'Please fill in * marked fields:\n';
	var formOK = true;
	
	if (document.getElementById('name').value == '') {
		message += 'name\n';
		formOK = false;
	}	
	if (document.getElementById('email').value == '') {
		message += 'e-mail\n';	
		formOK = false;
	}	
	if (document.getElementById('message').value == '') {
		message += 'question\n';		
		formOK = false;
	}	
	
	if (formOK) {
		return true;
	}	
	else {
		alert(message);
		return false;
	}
}