Fullscreen support or at least hide possibility

[Ddomel]

Hi,

I have noticed that (for example) YouTube fullscreen capability is not fully working, because VerticalTabs are still visible. Is it possible to detect fullscreen mode and hide tabs accordingly?

If not, please at least make a possibility to hide the tabs pane (with small dark button in bottom-right corner to unhide, or something similar).

Thanks! Tomasz