3. The method of claim 1 further comprising: generating, by the computer system, data for simultaneously displaying both the web document and the at least one advertisement.
3. The method of claim 1 further comprising: generating, by the computer system, data for simultaneously displaying both the web document and the at least one advertisement. 4. The method of claim 3 wherein the generated data allows the web document to be displayed in a first display area, and the at least one advertisement to be displayed in a second display area adjacent to the first display area.