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Changing the Target of a submitted form  RSS feed

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I have a scenario as follows.
My webpage has 2 frames and I am submitting a form in the first frame (which has the target as the second frame) to a servlet and currently the response is writtten to the second frame. I have a new requirement now. Upon submitting the form, I have to interface with another app and based on the response I have to do either one of this:
Case A: Write the results to the second frame
Case B: Pop-up a new window providing the user with some options and requesting him to select one and then submit the form in it to write the results in the second frame.

The first Case is simple and is existing currently.

If the response from the other app is the second case, then Can I change the target of the servelet dynamically to write to a new window instead of the second frame?
How do I do this?
Any suggestions would be greatly appreciated.

Author and ninkuma
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You can't. Once a request is sent to a specific target, there's no way to change which target the response will appear within. You will either need to use Javascript within that response to trigger further activity, or rework your requirements.
[ July 23, 2004: Message edited by: Bear Bibeault ]
It is sorta covered in the JavaRanch Style Guide.
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