The banner heading should stretch across the width of the page but the whole page should occupy 80% of the window width. If you can, center the page, put a 2px border in red around it, and put a light gray background color in the remainder of the window. (Don't worry if you don't know how to do the centering trick.)
The main information area of the page should create a column on the left that occupies 75% of page. The column on the right should contain the "advertisements" (the first three of which are images named ad1.gif, ad2.gif, and ad3.gif) and occupy 25% of the page.
Using the unordered list above, create horizontal navigational "buttons" just under the banner, flush left. Either put a border around the buttons and have the buttons (but not the border) change color when someone mouses over the links, or use the bottom border as an underline that shows up when someone mouses over the link.
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