public boolean httpGet(String url, String queryString,
			QAsyncHandler callback, Object cookie) {
		if (url == null || url.equals("")) {
			return false;
		}
		if (queryString != null && !queryString.equals("")) {
			url += "?" + queryString;
		}
		GetMethod httpGet = new GetMethod(url);
		httpGet.getParams().setParameter("http.socket.timeout",
				new Integer(CONNECTION_TIMEOUT));
		mThreadPool.submit(new AsyncThread(httpGet, callback, cookie));
		return true;
	}