I have asp pabe A as my main page. I use window.open to open page B. It opens a new browser for window B. If I then try to open a window C it replaces the page in browser B. Why does it not open a new browser?
Without seeing the code on how you did this, there's really no way to tell. It could be any number of things ranging from you not telling it to open in a new browser to you giving the browser for B and C the same name.