1. Copy this code, and paste it into your website.
2. Where it says 'page URL here', type in your website URL. For instance, if I wanted to have google on the pop-up, I would have written http://www.google.com. Do also change the part that says Name here to whatever you want. In the link above I wrote press to see example.
3. This part is optional! If you want a smaller pop-up than 700px-700px, change the width and height then! I've chosen to write width=400,height=400.
Many people choose to not have a scrollbar, which also includes me. If you want the same result as I, then type in 'no' instead of 'yes'. This part will now look like this: scrollbars=no.
I also chose to not have a resizeable pop-up. To get the same result as I, type in 'no' instead of 'yes'. This part should now look like this: resizeable=no.
4. And that was actually it! Hope you understood.
5.Extra: If you want to have a close button inside of the pop-up, copy this code and paste it into the page who's appearing in the pop-up. Ergo "the google page"