Plugin that opens page/site in tooltip/popup

Hello,

i’m searching for a way to open a page/site in a tooltip/popup inside the page that is already open.

Is there a plugin which can do that?

So i have my own plugin that creates some content and i want to open parts of it in a popup, not in a new browser-window like 20 years ago but as a window like frame/tooltip/popup inside the current window.

Can you suggest a plugin which can do this?

Kind regards,
Martin