function calculate() {
        var period = $('#h1').val();
        var amount = $('#h2').val();

        $.post({
            url: '@Url.Action("GetPrices", "Dashboard")',
            type: "POST",
            dataType: "json",
            contentType: 'application/json; charset=utf-8',
            cache:false,
            data: JSON.stringify({ pe: period, am: amount }),
            success: function (response) {
                $('#priceValue').html(response[0]);
                $('#lengthValue').html(response[1]);
                $('#dateValue').html(response[2]);
                $('#totalValue').html(response[3]);
            },
            error: function (XMLHttpRequest, textStatus, errorThrown) {
                alert(textStatus + errorThrown);
            }
        });
    }