Question regarding Pop Up!

Hello,

I subscribed to your website for 3 months and I tested the plugin: Wordpress Pop-Up

We are an important media portal in Canada and the most of our users continue to use IE 7.0.

We saw an issue when the pop up appears on IE 7.0, its size is completely stretched. You'll be able to see the pop-up directly on this link: http://blogue.surmon36.ca/ . Is it possible to repair this issue?

Thanks again

Best regards,

Frederic