public function getConfig($type, $variable)
	{
		// Is the requested config file not already cached?
		if (!isset($this->_config[$type])) {

			// Um, load it
			$config = $this->_loadFile($type, 'config');

			// Check it's what we expect
			if (!is_array($config)) {
				throw new FemtoException("Unable to parse config of type '{$type}'");
			}

			// Cache the config
			$this->_config[$type] = $config;
		}

		// Can we find the requested variable in the config array?
		if (isset($this->_config[$type][$variable])) {
			return $this->_config[$type][$variable];
		}

		throw new FemtoException("Unable to locate config variable '{$variable}' of type '{$type}' in file " . $this->_getFilePath($type, 'config'));
	}