private String getContentType(String fileExtention) {
		String contentType;

		switch (fileExtention) {
		case "html":
			contentType = "text/html";
			break;

		case "bmp":
		case "gif":
		case "png":
		case "jpg":
			contentType = "image";
			break;

		case "ico":
			contentType = "icon";
			break;

		default:
			contentType = "application/octet-stream";
			break;
		}

		return contentType;
	}