Strange behaviour of Firefox 4.01 with x/html and javascript
问题 I work on web accessibility for blind people interacting with a screen reader Jaws and a vocal synthesizer. I am using x/html with wai-aria and JavaScript to design accessible web pages of a questionnaire user test. In this kind of application, main difficulty is to face with different behaviors on different browsers and also versions of Jaws screen reader generate different behaviors. However, problems started after the release of Firefox 4 (and next 4.01). The same code of a web