GUys, I need a exit popup that can work with wordpress. When people try to click on close browser or go to under sites without on my linke,will popup and grab their attention? Can anyone help me on this?

just take the code of your PopUnder and paste it in your template footer.

for popunder code search:
here or here or here

Here is answer

http://www.blackhatworld.co15461-exit-popup-wordpress-blog.html