function count_credit(one_pay){
if (document.getElementById('result').style.display == 'none') document.getElementById('result').style.display = '';

	var valute = document.getElementById('valute').value;

	var total_cost = parseFloat(document.getElementById('total_cost').value, 10);
	var first_pay_percent = parseFloat(document.getElementById('first_pay_percent').value, 10);
	var delay = parseFloat(document.getElementById('delay').value, 10);
	var year_percent = parseFloat(document.getElementById('year_percent').value, 10);
	var month_percent = parseFloat(document.getElementById('month_percent').value, 10);
	var percent_kasko = parseFloat(document.getElementById('percent_kasko').value);

//////////////// Первоначальный взнос
var first_pay = (first_pay_percent>0) ? total_cost*first_pay_percent/100: 0;
document.getElementById('first_pay').innerHTML = first_pay+' '+valute;
/////////////// Размер кредита
var credit = total_cost-first_pay;
document.getElementById('credit_pay').innerHTML = credit+' '+valute;

//////////////// Ежемесячная комиссия
var month_cost = (month_percent>0) ? credit*month_percent/100: 0;
document.getElementById('month_pay').innerHTML = month_cost+' '+valute;

/////////////// Страхование КАСКО
var kasko_pay = (percent_kasko>0) ? total_cost*percent_kasko/100: 0;
document.getElementById('kasko_pay').innerHTML = kasko_pay+' '+valute;

var p = year_percent/(12*100);
//alert(credit+' * '+ p +' / 1-'+ Math.pow(1+p,-delay));
//(credit/delay)+
var result = Math.ceil(credit*p/(1-Math.pow(1+p,-delay)))+month_cost;
document.getElementById('total_month').innerHTML = result+' '+valute;

var total = result * delay;
document.getElementById('total').innerHTML = total +' '+valute;

one_pay = (valute == 'руб.')? '3000-6000': '100-200';
document.getElementById('one_pay').innerHTML = one_pay +' '+valute;

//alert (Math.ceil(percent_kasko));
}




function check_errors(){
var errors = new Array();
var text_er = '';
var total_cost = document.getElementById('total_cost').value;
var first_pay = document.getElementById('first_pay_percent').value;
var delay = document.getElementById('delay').value;
var year_percent = document.getElementById('year_percent').value;
var month_percent = document.getElementById('month_percent').value;
var percent_kasko = document.getElementById('percent_kasko').value;


if ( (isNaN(parseInt(total_cost, 10)) ) || (total_cost<=0) ) errors[0] = 'Не введена стоимость автомобиля';
if ( (isNaN(parseFloat(first_pay, 10)) ) || (first_pay<0) || (parseFloat(first_pay, 10)>=100)) errors[1] = 'Некорректно введен первоначальный взнос (0-100%)';
if ( (isNaN(parseInt(delay, 10)) ) || (delay<=0)) errors[2] = 'Некорректно введен срок кредита';
if ( (isNaN(parseFloat(year_percent, 10)) ) || (year_percent<=0) || (parseFloat(year_percent, 10)>=100)) errors[3] = 'Некорректно введена процентная ставка (0-100%)';
if ( (isNaN(parseFloat(month_percent, 10)) ) || (month_percent<0) || (parseFloat(month_percent, 10)>=100) ) errors[4] = 'Некорректно введена ежемесячная комиссия (0-100%)';
if ( (isNaN(parseFloat(percent_kasko, 10)) ) || (percent_kasko<0) || (parseFloat(percent_kasko, 10)>=100) ) errors[5] = 'Некорректно введено страхование КАСКО (0-100%)';


if (errors.length>0) for (i = 0; i<errors.length; i++) if (errors[i]) text_er += errors[i]+'\n';

if (text_er!=''){
   alert(text_er);
   return 0;
   }
   else return 1;
}


function change_status() {
var value = document.getElementById('user_married').value;

if (value == 'Женат(замужем)') document.getElementById('user2_table').style.display = '';
else document.getElementById('user2_table').style.display = 'none';



}