Warrior Hire: Need Slightly Changes To Exit Pop-Up

I have a exit pop-up on one of my squeeze pages, but I need to do some changes to it. Can you help me?
When people sign up for their free gift on my squeeze page, they'll see the exit pop-up, which I don't want, because if they press cancel on that message, they will be taken to another page and I won't get them on my list.
So I need to change it from popping up when people fill in their details in my opt-in form, yet still pop-up if they decides to exit the page.
Let me hear from you if you think you're right for the job!

Thank you,
Joachim