Use PageVisibility HTML5 API

[hardware]

I think it might be a good idea to use PageVisibility API to display notifications only when page is not visible for example, like https://github.com/ttsvetko/HTML5-Desktop-Notifications

Notify.config({
    pageVisibility: true|false
})

[leovarmak]

This would be actually great. But not sure if it would be suitable for every matchcase