I have a published Google Doc at https://docs.google.com/spreadsheet/pub?key=0AtjON-ccqVTgdDhKeGx0UlZpUWUyLTFZV2szQlJyNnc&output=html that I want to retrieve in JSON. I've been trying this but it’s not working:
https://developers.google.com/gdata/samples/spreadsheet_sample