Rollovers are a great addition to any Web site. A rollover is an image that changes appearance when the mouse is placed over the object (mouse over). Rollovers are very useful for navigation buttons. Navigation buttons change appearance on mouse over and this helps to clearly identify you're actually on the button. In addition, rollovers can be used to maximize your space within a Web Page. A single image can change appearance multiple times on mouse over. Have a caption for normal viewing and then a second or third caption appear on mouse over. Below are a few examples of rollovers.