Tip

Know where you've come from with framesets

This tip can be modified and used in many different ways. When working in framesets you can sometimes want to know what frame a user was in when they selected a hotspot. Here's how to find out.

You've got a frameset containing two frames, A + B. When giving the frame source append the following to the URL:

'&&FrameA' without quotes for the URL for frame A, and

'&&FrameB' without quotes for the URL for frame B.

You can now test using Javascript the document.referrer, substring the right 6 characters, and it will equal either FrameA or FrameB.

This can modified to work in many differrent situations.

Hope you like it and find it of benefit.

This was first published in February 2002

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