Category tabs don’t stay highlighted?

I’m designing a website at boldlygo.org with a friend.

Neither of us know much about php.

I installed a plugin here, that lets me link pages to categories. It works great; however, when you click on the category tabs it highlights home instead of the category. When you click on a non-category page, this is not a problem. How can I get the category pages to stay highlighted like the non-category pages?

Any suggestions?

thankyou.