By Caren Weiner Campbell
Updated June 06, 2000 at 04:00 AM EDT

Yeah, yeah, we know: It’s always fun until somebody gets hurt. If that happens on your summer vacation, however, you can click over to this comprehensive first-aid site for some medical guidance. An arm of the health cyberconglomerate, this encyclopedic site gives informative, reasonably clear directions on how to handle a vast spectrum of sicknesses ranging from poison ivy to difficult childbirth; if your question remains unanswered, you can write in and ask Stanford Medical School professor Dr. Paul Auerbach. Even beyond the perversely alluring photos of bleeding eyes and infected toes, the site is well worth perusing for tips on sport-related injuries, recommended immunizations, and the symptoms that distinguish heartburn from heart attack — so that if an outdoor emergency does erupt, you won’t end up acting like some kind of Hippocratic oaf.