Safari's pop-up blocker is on by default. If you would like to change Safari's pop-up blocker settings you can follow the instructions below:
1.) With Safari open, click on the the word Safari in the upper left hand corner of the screen, right next to the Apple logo, and then click on Preferences.
2.) In the menu that appears click on the "Security" tab.
3.) To turn off the pop-up blocker (NOT recommended), uncheck the "Block pop-up windows".
*at this time it isn't possible to allow certain website to display pop-ups. If you would like
to allow pop-ups for a certain website you will need to temporarily disable pop-up blocker