Hold the left mouse button down as you drag the slider above the image (or use the arrow buttons) to fade between the NOAA-14 visible image and the corresponding 3.7 micrometer shorwave InfraRed (IR) and 10.8 micrometer longwave IR images at 21:44 UTC (3:44 PM Central time) on 21 Dec 2000. To zoom, click on the "Zoom" button, and then click the "hand" cursor on the image where you want to center the zoom.