Using HTML5 database and offline capabilities, Part 1: Provide offline data editing and data synchronization
HTML version 5 (HTML5) is not expected to reach World Wide Web Consortium (W3C) Recommendation status until 2014. Though it’s not officially a standard, web browser vendors are adding and marketing HTML5 features.
http://www.ibm.com/developerworks/library/wa-html5db/index.html
