[Javascript] Open page in frame from popup window

[Phillip Morgan]

Hi All,

I have a site I'm putting together which is framed. It pops up a small 
navigation page with links to other pages. I'd like the links in this 
navigation page to open the selected page in the parent framed site.

There are 4 frames on the main page: topleft, navleft, navtop and 
mainFrame. The links in the popup nav window need to load the linked 
pages in mainFrame.

How can I do this?

tia
phill

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