Dual monitors and full screen

[Spaz80]

I have a web page that uses javascript to open two new web pages. The two new pages should be opend in full screen on dual monitors. But if I move one of them to the right monior and set Fullscreen = true, it opens over the other one. How can I get the two web pages to open in different monitors. I want to view one web page in each monitor Please help.... Spaz