protected function sanitizeWidth($width, $height)
	{
		// If no width was given we will assume it is a square and use the height.
		$width = ($width === null) ? $height : $width;

		// If we were given a percentage, calculate the integer value.
		if (preg_match('/^[0-9]+(\.[0-9]+)?\%$/', $width))
		{
			$width = (int) round($this->getWidth() * (float) str_replace('%', '', $width) / 100);
		}
		else
		{
			// Else do some rounding so we come out with a sane integer value.
			$width = (int) round((float) $width);
		}

		return $width;
	}