Wordpress plugin that gives on screen popup? For Cpa Iframe

Yeah title says all, I want the plugin to make like an image clickable so that when someone clicks on it it opens up a new like box where I can have an iframed cpa offer(html). I don't want it to be a new window/tab , i would like it to be on the same page as sort of like an overlay. Sorry my terminology is pretty bad,

Thanks for anyone that can help