rPrefix').value = 'INV-';
        document.getElementById('invoiceNumberFormat').value = '{prefix}{year}{month}{sequence:4}';
        document.getElementById('defaultPaymentTerms').value = '30';
        document.getElementById('defaultTaxRate').value = '19.00';
        document.getElementById('autoCalculateRentalDays').checked = true;
        document.getElementById('showLogoOnInvoice').checked = true;
        document.getElementById('currencySymbol').value = 'â‚¬';
        document.getElementById('curr