function creditcalc_make_calculation( )
	{
		val_credit_procent = parseFloat( document.getElementById("credit_procent").value );
		if( isNaN( val_credit_procent ) ) val_credit_procent = 0;
		if( val_credit_procent <= 0 )
		{
			alert( 'Поле "Процентная ставка" должно быть заполнено!' );
			return false;
		}
		if( val_credit_procent > 100 )
		{
			alert( 'Введите разумную процентную ставку в поле "Процентная ставка"!' );
			return false;
		}

		val_credit_full_sum = parseInt( document.getElementById("credit_full_sum").value );
		if( isNaN( val_credit_full_sum ) ) val_credit_full_sum = 0;
		if( val_credit_full_sum <= 0 )
		{
			alert( 'Поле "Сумма покупки" должно быть заполнено!' );
			return false;
		}

		val_credit_first_payment = parseInt( document.getElementById("credit_first_payment").value );
		if( isNaN( val_credit_first_payment ) ) val_credit_first_payment = 0;
		if( val_credit_first_payment > val_credit_full_sum )
		{
			alert( 'Первый взнос не может быть больше суммы покупки!' );
			return false;
		}
		if( val_credit_first_payment != 0 && val_credit_full_sum == val_credit_first_payment )
		{
			alert( 'Первый взнос не может быть равен сумме покупки!' );
			return false;
		}

		val_credit_term = parseInt( document.getElementById("credit_term").value );
		if( isNaN( val_credit_term ) ) val_credit_term = 0;
		if( val_credit_term <= 0 )
		{
			alert( 'Поле "Срок кредитования" должно быть заполнено!' );
			return false;
		}
		if( val_credit_term > 600 )
		{
			alert( 'Введите разумный срок в поле "Срок кредитования"!' );
			return false;
		}

		val_credit_calc_method = parseInt( document.getElementById("credit_calc_method").value );
		if( isNaN( val_credit_calc_method ) ) val = 0;

		val_credit_comission_1 = parseFloat( document.getElementById("credit_comission_1").value );
		if( isNaN( val_credit_comission_1 ) ) val_credit_comission_1 = 0;
		if( val_credit_comission_1 > 50 )
		{
			alert( 'Введите разумный процент в поле "Единоразовая комиссия"!' );
			return false;
		}

		val_credit_comission_2 = parseFloat( document.getElementById("credit_comission_2").value );
		if( isNaN( val_credit_comission_2 ) ) val_credit_comission_2 = 0;
		if( val_credit_comission_2 > 10 )
		{
			alert( 'Введите разумный процент в поле "Ежемесячная комиссия"!' );
			return false;
		}

		val_credit_calc_bank = 0;
		if( document.getElementById("credit_calc_bank") )
		{
			val_credit_calc_bank = parseInt( document.getElementById("credit_calc_bank").value );
			if( isNaN( val_credit_calc_bank ) ) val_credit_calc_bank = 0;
		}

		val_credit_calc_credit = 0;
		if( document.getElementById("credit_calc_credit") )
		{
			val_credit_calc_credit = parseInt( document.getElementById("credit_calc_credit").value );
			if( isNaN( val_credit_calc_credit ) ) val_credit_calc_credit = 0;
		}

		val_credit_calc_procent = 0;
		if( document.getElementById("credit_calc_procent") )
		{
			val_credit_calc_procent = parseInt( document.getElementById("credit_calc_procent").value );
			if( isNaN( val_credit_calc_procent ) ) val_credit_calc_procent = 0;
		}

		newWindow = window.open( "http://www.bankstore.com.ua/index2.php?option=com_bankstore" +
			"&command=ajax_creditcalc&credit_procent=" + val_credit_procent +
			"&credit_full_sum=" + val_credit_full_sum +
			"&credit_first_payment=" + val_credit_first_payment +
			"&credit_term=" + val_credit_term +
			"&credit_calc_method=" + val_credit_calc_method +
			"&credit_comission_1=" + val_credit_comission_1 +
			"&credit_comission_2=" + val_credit_comission_2 +
			"&bank_id=" + val_credit_calc_bank +
			"&credit_id=" + val_credit_calc_credit +
			"&procent_id=" + val_credit_calc_procent +
			"&calctype=simple" +
			"&remote_addr=194.50.125.226" +
			"&http_x_forwarded_for=" +
			"&fullhtml=1&referer=" + "http%3A%2F%2Fwww.omega-avto.net%2Findex.php%3Fshow_aux_page%3D3",
			"_blank", "directories=no, height=550, width=750, location=no, menubar=no, resizable=yes, scrollbars=yes, status=no, titlebar=no, toolbar=no", false );
		return true;
	}