function calculate() {
	$("#calc-result").html("0.0000");
	$("#currency-rate").html("0.0000");
	to = $("#currencyCalculator-to").attr('value');
	if(to != 0) {
		from = $("#currencyCalculator-from").attr('value');
		amount = $('#currencyCalculator-amount').attr('value').replace(',','.');
		result = (amount*from/to?amount*from/to:0).toFixed(4);
		$("#calc-result").html(result+" "+$('#currencyCalculator-to :selected').text());
		$("#currency-rate").html((from/to?from/to:0).toFixed(4));
	}
}

$(document).ready(function(){
	$('#calc-button').click(function(el) {
		calculate();
	});
});