public function addButtonPath($path)
	{
		// Just force path to array.
		settype($path, 'array');

		// Loop through the path directories.
		foreach ($path as $dir)
		{
			// No surrounding spaces allowed!
			$dir = trim($dir);

			// Add trailing separators as needed.
			if (substr($dir, -1) != DIRECTORY_SEPARATOR)
			{
				// Directory
				$dir .= DIRECTORY_SEPARATOR;
			}

			// Add to the top of the search dirs.
			array_unshift($this->_buttonPath, $dir);
		}
	}