Mind if I jump in.

I think you can create the archives tab in blogger, however, you can't use PHP, you have to use the blogger language.

I haven't done anything like this on my blog but you may need to do the following:

1. Create an archives widget to display the archives.
2. Wrap the widget in a DIV tag.
3. Create Javascript to display or hide the DIV tag when a visitor clicks on the Archives link.

I believe this is what needs to be done to get it to work. I haven't done it before, but I may try it out on my test site to see if it works.

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