My goal is to be able to introduce a floating image and/or text over a website that I don't control.
Typing that out, I can understand that this may sound malicious, and as such may not be possible. But I assure you, it's innocent.
As a joke, I would like to direct friends to this new site and, when visited, have it load a friend's website in the background... but with a funny picture or text that would float on the screen over his site. I have purchased the domain name and secured hosting.
Is such a thing possible? Or is there a similar way to do this as some sort of add-on that resides in the browser?
Any suggestions or advice would be appreciated. Thanks in advance!