Help me fix my osCommerce site

My osCommerce site ([login to view URL]) has some problems. 1. You can add products to the cart, but when you try to check out (initiate the checkout process) nothing happens. It just refreshes the shopping cart window. 2. The footer was hard coded into every public page of the site. It needs to be referenced from the [login to view URL] file instead, so that if I need to change the links on it, I can do it in just one page. 3. The footer looks different depending on which browser you get to it (see attached). It needs to be changed so that it looks everywhere the same. It has to match the footer on the non-osCommerce section of the site([login to view URL]) This job needs to be completed by midnight (-5 GMT) today 09/09/09.