diff --git a/_config.php b/_config.php
index c388cdf..0fc7ead 100644
--- a/_config.php
+++ b/_config.php
@@ -10,4 +10,48 @@ CMSWorkflowSiteConfigDecorator::apply_active_config();
 Director::addRules(100, array(
 	'dev/regress/$Action/$ID' => 'FrameworktestRegressSessionAdmin'
 ));
+
+Session::start();
+if(@$_GET['db']) {
+	$db = $_GET['db'];
+} elseif(@$_SESSION['db']) {
+	$db = $_SESSION['db'];
+} else {
+	$db = null;
+}
+if($db) {
+	global $databaseConfig;
+	if($db == 'mysql') {
+		$databaseConfig['type'] = 'MySQLDatabase';
+		$databaseConfig['server'] = SS_MYSQL_DATABASE_SERVER;
+		$databaseConfig['username'] = SS_MYSQL_DATABASE_USERNAME;
+		$databaseConfig['password'] = SS_MYSQL_DATABASE_PASSWORD;
+	} else if($db == 'postgresql') {
+		$databaseConfig['type'] = 'PostgreSQLDatabase';
+		$databaseConfig['server'] = SS_PGSQL_DATABASE_SERVER;
+		$databaseConfig['username'] = SS_PGSQL_DATABASE_USERNAME;
+		$databaseConfig['password'] = SS_PGSQL_DATABASE_PASSWORD;
+	} else if($db == 'mssql') {
+		$databaseConfig['type'] = 'MSSQLDatabase';
+		$databaseConfig['server'] = SS_MSSQL_DATABASE_SERVER;
+		$databaseConfig['username'] = SS_MSSQL_DATABASE_USERNAME;
+		$databaseConfig['password'] = SS_MSSQL_DATABASE_PASSWORD;
+	} else if($db == 'sqlite3') {
+		$databaseConfig['type'] = 'SQLite3Database';
+	} else {
+		// stick with default settings set through ConfigureFromEnv
+	}
+}
+
+if(@$_GET['db']) {
+	$enabletranslatable = $_GET['enabletranslatable'];
+} elseif(@$_SESSION['db']) {
+	$enabletranslatable = $_SESSION['enabletranslatable'];
+} else {
+	$enabletranslatable = null;
+}
+if($enabletranslatable) {
+	Object::add_extension('SiteTree', 'Translatable');
+	Object::add_extension('SiteConfig', 'Translatable');
+}
 ?>
\ No newline at end of file