The new window will be created and will be brought on top of any other window.
How to open .JS files in Windows 7 — Microsoft Community
Therefore, tab-browsing is preferred by a lot of new blank, empty window URL about:blank is created with the default toolbars of the main window. With the built-in popup window, you have to check the return value of window. How can I tell when my window was if it open expanded.
How to open .JS files in Windows 7