I have a form (absence request) that has a table containing a number field (number of hours requested).  The user can click a link to add more lines to the table, and I have a number field that contains the sum of all hours requested.  The script I have for the sum is posted below, but what I need is to incorporate script to allow decimal (2 places) values in both the table number field and the sum number field.  I see some script across the Answers site related to currency, etc., but I don't know how to incorporate the script to allow decimals with the script I already have.  Any help to get this functionality added to my form would be greatly appreciated.  

$(document).ready(function () {
    $('.cf-table-block').on('blur', 'input', sumtotal);
  
    function sumtotal() {
        var s = 0;
        $('.sum input').each(function () {
            s += parseNumber($(this).val());
        });
        $('.total input').val(s);
    }
    function parseNumber(n) {
        var f = parseFloat(n); //Convert to float number.
        return isNaN(f) ? 0 : f; //treat invalid input as 0;
    }

});