function formuoti_pranesima(klaidos) {
	if (klaidos.length==1) 
	pranesimas = klaidos[0]+".";
	else {
		pranesimas = "";
		for (i=1; i<=klaidos.length; i++)
		pranesimas += "\n"+i+". "+klaidos[i-1];
	}
	return pranesimas;
}

function checkLetter(forma, neivestas, sutikimas)
{
	klaidos = new Array();
	
	if (!forma.ac_type.value) {
		klaidos.push(neivestas+document.getElementById('ac_0').innerHTML);
	}
	
	if (!forma.ac_name.value || forma.ac_name.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_1').innerHTML);
	}

	if (!forma.ac_surname.value || forma.ac_surname.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_2').innerHTML);
	}

	if (!document.getElementById('radio_male').checked && !document.getElementById('radio_female').checked)
	{
		klaidos.push(neivestas+document.getElementById('ac_3').innerHTML);
	}
	
	if (!forma.ac_date_of_birth.value || forma.ac_date_of_birth.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_4').innerHTML);
	}
    
	if (!forma.citizen.value || forma.citizen.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_5').innerHTML);
	}
	
	if (!forma.ac_press.value || forma.ac_press.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_6').innerHTML);
	}
	
	if (!forma.ac_organ_name.value || forma.ac_organ_name.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_7').innerHTML);
	}
	
	if (!forma.ac_profession.value || forma.ac_profession.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_8').innerHTML);
	}
	
	if (!forma.ac_work_adress.value || forma.ac_work_adress.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_9').innerHTML);
	}
	
	if (!forma.ac_city.value || forma.ac_city.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_10').innerHTML);
	}
	
	if (!forma.ac_country.value || forma.ac_country.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_11').innerHTML);
	}
	
	if (!forma.ac_telephone.value || forma.ac_telephone.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_12').innerHTML);
	}
	
	if (!forma.ac_mob_telephone.value || forma.ac_mob_telephone.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_13').innerHTML);
	}
	
	if (!forma.ac_fax.value || forma.ac_fax.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_14').innerHTML);
	}
	
	if (!forma.ac_email.value || forma.ac_email.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_15').innerHTML);
	}
	
	if (!document.getElementById('radio_pass').checked && !document.getElementById('radio_card').checked)
	{
	
		klaidos.push(neivestas+document.getElementById('ac_16').innerHTML);
	}
	
	if (!forma.ac_number.value || forma.ac_number.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_17').innerHTML);
	}
	
	if (!forma.ac_id_number.value || forma.ac_id_number.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_18').innerHTML);
	}
	
	if (!forma.ac_picture.value || forma.ac_picture.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_19').innerHTML);
	}
	
	if (!forma.letter_code.value || forma.letter_code.value.match(/^\s+$/)) {
		klaidos.push(neivestas+document.getElementById('ac_20').innerHTML);
	}
	
	if (!forma.accept_agreement.checked) {
		klaidos.push(sutikimas);
	}
	
	if (klaidos.length > 0) {
		alert(formuoti_pranesima(klaidos));
		return false;
	}
}