$(document).ready(
	function () {
		$("input[@name=credit_calculate]").click(calculate);
		$(".st").click(change_preview);
		$("input[@name=credit_calculate2]").click(convert);
	}
);

function convert()
{
	try {
		
		$from	= $("#no").val();
		$to		= $("#to").val();
		$to_s	= 0;
	
		$from_s	= parseFloat($("#no2").val());
		if(!isNaN($from_s)) {
			$to_s	= Math.ceil(($from_s*exchange_rates[$from])*100/exchange_rates[$to])/100;
			$("#to2").val($to_s);
		}
	} catch (e){}
	return false;
}

function change_preview()
{
	$st1	= $("#st1");
	$st2	= $("#st2");
	
	$thumb	= this.title;
	$href	= this.href;
	
	$('.st').removeClass('active');
	$('.st').attr('rel', 'gall');
	$(this).addClass('active');
	$(this).removeAttr('rel');
	
	$st1.attr("href", $href);
	$st2.attr("src", $thumb);
		
	return false;
}

function calculate()
{
	try {
		var $creditSum	= $('#summ').val();
		var $parcent	= $('#proc').val();
		var $parcent2	= $parcent/100;
		var $term		= $('#time').val();
		
		var $monthlyPayment	= ($creditSum*$parcent2/12)/(1-Math.pow((1+$parcent2/12), -$term));
		$monthlyPayment		= 100*$monthlyPayment;
		$monthlyPayment		= Math.ceil($monthlyPayment)/100;
		$monthlyPayment		= parseFloat($monthlyPayment);
		
		if(isNaN($monthlyPayment)) {
			$('#month').val('?');
		} else {
			$('#month').val($monthlyPayment);
		}
	} catch (e){
		$("#month").val('?');
	}
	return false;
}