[yehanyin]

@rickmb Thanks. Not natively supported by Firefox is bad. However, at least the firefox user can install the extension to make it work. IE is another story. I hope it can be supported in later version of IE 10.

Those two specs are not competing. Both Chrome and Safari supports both. But the implementation of FF extension is based on the old spec and that's why I say it's better to stick in old spec now to give users the consistent user experience.

Again, thanks for reading and commenting.