Add two banners to the left and right side of a website(repost)

Please find attached [login to view URL] and [login to view URL] The banners need to be positioned to the left and right of the website so they will apear if the users screen is big enough to show space on the left and right. The main box of the site should stay central so these should not widen the page. It may be best to have the disappear depending on the screen size. They're to go on this site http://www . angliarecliners . co . uk (remove the spaces) and you can either amend the [login to view URL] attached or provide me with the overall code and I will implement it. The [login to view URL] should go on the left and the code in [login to view URL] on the right.