function com_uninstall()
{
$lang = JFactory::getLanguage();
$lang->load('com_installer');
DMInstallHelper::removeFiles();
DMInstallHelper::deleteFromDb();
// if there's no more data, we remove the tables
if (DMInstallHelper::cntDbRecords() == 0) {
DMInstallHelper::removeTables();
}
// delete the data folder if it's empty
if (DMInstallHelper::cntFiles() == 0) {
DMInstallHelper::removeDmdocuments();
}
}