Topic says it all. I've got no problems with (in the below simple example) main.style.display = "block", but I cannot find any way to do the same to sub. I've tried everything I can think of to ...

I have a page that displays a map from the google map api. The map is inside a div with an id of #mapDiv. My stylesheet has a media query that sets display:none for #mapDiv if the screen is under a ...