Abstract: The present invention provides a method and system for inserting a digital advertisement into a window by a computer processor for display on a screen. First, an initial portion of the window containing only text is identified that is of sufficient size to accommodate the advertisement. Next the advertisement is inserted into the identified initial window portion behind the text so that the text is readable. Then, the color of the advertisement or of a portion of the text is subsequently adjusted so that the advertisement becomes more prominent. The text may contain text-related graphics and the advertisement may be placed as not to obstruct any such graphs. As a user scrolls the underlying content, the advertisement is then moved.