I would like to do this using responsive code, with each screen size calling a different html file via an iframe.
So for a big display it would call the iframe html for 728x90 aka leaderboard.html
For a smaller display it would call the iframe for 428x60 aka banner.html
And for small devices (mobile) it would call the iframe for mobilead.html.
I read all over including https://xenforo.com/community/threads/set-iframe-width-using-responsive-presets.56201/ but thats just for resizing the iframe based on screen size. I want to call a different iframe html source based on screen size.
Can this be done? Thank you!