[RESOLVED] Please help me write a code 2

Okay, I had a question before, and someone helped me answer it. Now, I would like to get the same idea, except have the link change in a frame (instead of opening in a new window). How do I do this? Here’s the old question (same rules apply to this one):

[url]http://www.webdeveloper.com/forum/showthread.php?t=118560&highlight=write+code[/url]

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