It is a Java Applet, which signals an IDL program to retrieve data and make up GIF files for display.
This comes to you from the IMAGE/FUV team at UC Berkeley Space Sciences Lab.
UPDATES:
10/28/03 : Timestamps on images are now correct (were off by up to one minute).
3/31/04 : Up to now, timestamps reported the end of the integration time. From hereon, they will report the center time of the integration. WIC stamps before today's date were 12 seconds later than the center of the integration time, SI stamps were 6 seconds later. These now match the timestamps in the FUVIEW software.