How do I get the sent message to appear only in the pop up box and not replace the content of the page?

Example:  http://louisville.libguides.com/art/home 

On the right sidebar, click the link icon. A pop up box appears with the page title and URL and a space for the user to enter their email. When they hit send the "Your Email has been sent" message overwrites the page they were on. How do I keep this from happening?

Unfortunately, there is no way to set up the iframe to load the URL in itself. The form is redirected to the thank you page on click and that is why it seems like it is opening it in full screen. The only way you could set up the iframe to work correctly is to edit your form's source code in order to prevent it from redirecting to another page on submit.

Let us know if you need more information.