Application Development Software

I am building an internal site and I am have setup several pages with tabs at the top. In the tab area I have links to locally hosted documents. What I would like to do is to have each link open in the frame below when clicked.
Right now I have two problems:

1. When I open a document and it loads into the frame below in included all the home page frames with it. So I am getting the left side frame, the top frame and the bottom frame along with the document I want to load. Is there a way to just get the document to load without the other frames?

2. Once a document is loaded and I click another link in the top frame it opens a whole new window. I would like to have the document open in the same frame below.
If you would like to look at the site let me know and I can give you access.