free pop-up window help!

Wasssup, im tryign to get an automatic window that pops up when somebody loads my site. I want one that I can put my cpa advertisements on it. Im currently using weebly as my host so im probly going to need a html code or somthing. Can anybody plzz help me?

Thanks!!

p.s. not sure if this was the right spot to put this thread

Why do you keep asking in two different threads?
Did you Google it?

Take a look at this link;

use this: or this: