How to prevent a monitor from sleeping while watching html 5 animation

Question

Is there a way to prevent a monitor from sleeping while on a web page?

I have a page with an animation in html that doesn't require user interaction. The monitor can sleep during this and I want to prevent this.

When watching a video on Hulu, I notice that the monitor doesn't sleep so there must be some way to prevent this.

Answer 1

The talk about Flash got me wondering, so I made a simple move that just loops a short flv file. Lo and behold when on this page, the monitor doesn't sleep! So all I need to do is make a little movie that's just the background color of the page and loop that on pages where I don't want the monitor to sleep.

Answer 2

It's not possible in pure HTML. Hulu does it because it's Flash-based, and the plugin has access to the OS layers, which is something JS or HTML does not have. So the only way to do this would be to have a new paragraph in the HTML5 spec.

I suppose that the browser will disable sleep when going fullscreen, but it's to be verified.

See this post for more info.