I get that banner problem with spaceports pages all the time... You can only view their sites in your initial browser window that opened when you opened your browser. The window name they used for the banner window matches the window named used by most sites and I suspect, the right mouse button in netscape to open a second window. they should have made the target window for the banners have an usual name like 'spaceportsbannerwindowhere' or something. But I think they used something like '_new' or a similar common item.

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