Created as part of my answer to http://stackoverflow.com/questions/8178825/create-text-file-in-javascript
http://stackoverflow.com/questions/18728819/multi-level-hovering-css
Lists maps from map_floor.json, highlighting maps that have duplicates.
Grabs map_floor info from the GW2 API and parses it with obeo.js, a streaming JSON parser.
Grabs map_floor info from the GW2 API and parses it with JSON.parse. In both Firefox and Chrome it only finds 28 POI, but if you look at the raw JSON there are about 51.