private String POST(String url, String jsonParamsAsString){
		String result = "";	    
		try {
			DefaultHttpClient httpClient = new DefaultHttpClient();
			HttpPost postRequest = new HttpPost(url);
			StringEntity input = new StringEntity(jsonParamsAsString);
			input.setContentType("application/json; charset=utf-8");
			postRequest.setEntity(input);
			HttpResponse response = httpClient.execute(postRequest);
			result = convertInputStreamToString(response.getEntity().getContent());       
			byte ptext = result.getBytes();
			result = new String(ptext, "UTF-8");	        
		} catch (Exception e) {	    }
		return result;
	}
	private String convertInputStreamToString(InputStream inputStream) throws IOException{
		BufferedReader bufferedReader = 
				new BufferedReader( new InputStreamReader(inputStream));
		String line = "";
		String result = "";
		while((line = bufferedReader.readLine()) != null)
			result += line;
		inputStream.close();
		return result;
	}