private static String contentType(String fileName)
	{
		if (fileName.endsWith(".htm") || fileName.endsWith(".html"))
		{
			return "text/html";
		}
		if (fileName.endsWith(".jpg") || fileName.endsWith(".jpeg"))
		{
			return "image/jpeg";
		}
		if (fileName.endsWith(".gif"))
		{
			return "image/gif";
		}
		if (fileName.endsWith(".txt"))
		{
			return "text/plain";
		}
		if (fileName.endsWith(".pdf"))
		{
			return "application/pdf";
		}
		return "application/octet-stream";
	}