function grab()
{
parent::grab();
// strip out everything but numbers and decimal symbols
$this->value = preg_replace('/[^\\d\\' . $this->decimal_symbol . ']/', '', $this->value);
// complain if multiple decimal symbols
if (!empty($this->value) && !is_numeric($this->value)) {
$this->set_error('Please check the format of the amount you entered.');
} else {
if (strpos($this->value, $this->decimal_symbol) !== false) {
$this->value = sprintf('%.2F', $this->value);
}
}
}
