CAllMain::GetProperty

public function GetProperty($PROPERTY_ID, $default_value = false)
{
	$propVal = $this->GetPageProperty($PROPERTY_ID);
	if($propVal !== false)
		return $propVal;

	$propVal = $this->GetDirProperty($PROPERTY_ID);
	if($propVal !== false)
		return $propVal;

	return $default_value;
}