function __construct()
{
parent::__construct();
$this->titles = array(1 => 'VAT Due On Sales', 2 => 'VAT Due On EU Purchases', 3 => 'Output Tax', 4 => 'Input Tax', 5 => 'Net Tax', 6 => 'Sales Exc. VAT', 7 => 'Purchases Exc. VAT', 8 => 'EU Sales Exc. VAT', 9 => 'EU Purchases Exc. VAT');
}