1. An image display mechanism for controlling the display of images on an image display device in accordance with attention characteristics of a viewer to a displayed image, comprising: an image control mechanism for: determining attention characteristics for the viewer to a currently displayed image on the image display device; classifying the attention characteristics as exogenous attention or endogenous attention; and controlling the display of one or more images on the image display device responsive to whether the attention characteristics are exogenous attention or endogenous attention.