Current web browsers (firefox, chrome, ...) usually have built in popup blockers that prevent popups appearing without user interaction (click on link).
In addition, there are multiple addons that usually do a good job at preventing unwanted adds/popups (adblock plus, adblock plus popup addon, ...).
However I have recently faced a new way of opening a popup that seems to be poorly handled by web browsers/add ons:
Option 1: the user clicks on a link (in tab1), the link opens in the current tab (tab1), and a javascript script tries to open a popup (in tab2).
Option2: the user clicks on a link (in tab1), the link opens in a new tab (tab2), and a javascript script tries to open an ad in the origin tab (tab1).
The option1 seems to be well handled by browsers, but the option2 doesn't. Any idea how to block the second option ?