Ummm, tell me if i am wrong, you have something like this

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|    |       |
|    |   B   |
|    |       |
|  A |-------|
|    |   C   |
|    |       |
--------------
[download]

And what you want to do is press a link in A , and affect both B and C ?
Well , if i am right, then what you need is just a little javascript trick
I know i've use it before, but i am not sure about the code, so the best i can do for you is tell you the URL where i did find the answer: Here
Good Luck

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Dreams they just disapear into the shadows,
then they become true....

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