I want to thank the author. Like many users, to repeat this project entirely on my own would be a nightmare. The GMail HTML source produced from the server is "minified". Random, meaningless class and id names. Author took on the burden and made Gmail more accessible for browser extension/add-on. I implemented a FireFox addon (for accessibility purpose for my senior thesis) using Gmail.js. Furthermore, the code is very readable and the API is extremely intuitive and well-designed. Thank you!