// オリジナル
			//String param = String.format("mail=%s&password=%s&next_url=", mail,password);

		// takuroが直した
		String param = String.format("mail_tel=%s&password=%s&next_url=", mail,password);

		/**
		 * オリジナル 
		 * HttpURLConnection http = null; 
		 * try {
		 * 
		 * http = Http.postConnection(LOGINPAGE_URL, param, null); String
		 * cookies = http.getHeaderField("Set-Cookie"); String userSession =
		 * NicoText.getUserSession(cookies); if(userSession != null){
		 * Http.setUserSession(userSession); return true; }
		 **/

		// ここからtakuroがなおした
		HttpsURLConnection http = null;
		try {

			http = (HttpsURLConnection) Http.postConnection(LOGINPAGE_URL,
					param, null);

			String userSession = "";

			Map headers = http.getHeaderFields();
			Iterator it = headers.keySet().iterator();
			while (it.hasNext()) {
				String key = (String) it.next();
				System.out.println(key + ":" + headers.get(key));
				if (key != null && key.equals("Set-Cookie")) {
					userSession = headers.get(key).toString();
				}
			}
			userSession = NicoText.getUserSession(userSession);
			System.out.println("ユーザセッションをゲットなう" + userSession);

			// ここまでtakuroがなおした。あとはそのまま・・