Closed fassetar closed 8 years ago
http://stackoverflow.com/questions/1060008/is-there-a-way-to-detect-if-a-browser-window-is-not-currently-active
http://www.html5rocks.com/en/tutorials/pagevisibility/intro/
http://stackoverflow.com/questions/1060008/is-there-a-way-to-detect-if-a-browser-window-is-not-currently-active