Spell Number

function spellNumber(num) {
            var digitsContent = ["zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"],
                teensContent = ["ten", "eleven", "twelve", "thirteen", "forteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"],
                tensContent = ["twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"],
                num = num.toString(),
                result = new Array();

            // Three digit number
            if (num.length > 2) {
                result.push(digitsContent[parseInt(num[0])]);
                result.push("hundred");

                if (parseInt(num[1]) > 0) {
                    // Get a substring of last 2 digits
                    if (parseInt((num[1] + num[2])) <= 19) {
                        result.push("and");
                        result.push(teensContent[parseInt(num[2])]);
                    } else {
                        result.push(tensContent[parseInt(num[1]) - 2]);
                        result.push(digitsContent[parseInt(num[2])]);
                    }
                } else {
                    result.push("and");
                    result.push(digitsContent[parseInt(num[0])]);
                }

            } else {
                if (num.length > 1) {
                    // That is 2 digits number
                    if (parseInt((num[0] + num[1])) <= 19) {
                        result.push(teensContent[parseInt(num[1])]);
                    } else {
                        result.push(tensContent[parseInt(num[0]) - 2]);
                        result.push(digitsContent[parseInt(num[1])]);
                    }
                } else {
                    // That is just one digit
                    result.push(digitsContent[parseInt(num[0])]);
                }
            }

            // Make the first letter capital
            result[0] = result[0].charAt(0).toUpperCase() + result[0].slice(1);
            return result.join(' ');
        }