var browserTest = "good";
if (browserTest == "good")             
 {
  ads_on      = new Image;
  ads_on.src  = "images/reverse_logo_ads.jpg";
  ads_off     = new Image;
  ads_off.src = "images/logo_ads.jpg";
  cnn_on      = new Image;
  cnn_on.src  = "images/reverse_logo_cnn.jpg";
  cnn_off     = new Image;
  cnn_off.src = "images/logo_cnn.jpg";
  goog_on      = new Image;
  goog_on.src  = "images/reverse_logo_google.jpg";
  goog_off     = new Image;
  goog_off.src = "images/logo_google.jpg";
  hmc_on      = new Image;
  hmc_on.src  = "images/reverse_logo_hmc.jpg";
  hmc_off     = new Image;
  hmc_off.src = "images/logo_hmc.jpg";
  maus_on      = new Image;
  maus_on.src  = "images/reverse_logo_dermaus.jpg";
  maus_off     = new Image;
  maus_off.src = "images/logo_dermaus.jpg";
  noao_on      = new Image;
  noao_on.src  = "images/reverse_logo_NOAO.jpg";
  noao_off     = new Image;
  noao_off.src = "images/logo_NOAO.jpg";
  onion_on      = new Image;
  onion_on.src  = "images/reverse_logo_onion.jpg";
  onion_off     = new Image;
  onion_off.src = "images/logo_onion.jpg";
  sim_on      = new Image;
  sim_on.src  = "images/reverse_logo_simbad.jpg";
  sim_off     = new Image;
  sim_off.src = "images/logo_simbad.jpg";
  spit_on      = new Image;
  spit_on.src  = "images/reverse_logo_spitzer.jpg";
  spit_off     = new Image;
  spit_off.src = "images/logo_spitzer.jpg";
  sciapps_on      = new Image;
  sciapps_on.src  = "images/reverse_logo_sciapps.png";
  sciapps_off     = new Image;
  sciapps_off.src = "images/logo_sciapps.png";
  scifi_on      = new Image;
  scifi_on.src  = "images/reverse_logo_scifi.jpg";
  scifi_off     = new Image;
  scifi_off.src = "images/logo_scifi.jpg";
  stef_on      = new Image;
  stef_on.src  = "images/reverse_logo_heart.jpg";
  stef_off     = new Image;
  stef_off.src = "images/logo_heart.jpg";
  uw_on      = new Image;
  uw_on.src  = "images/reverse_logo_UW.jpg";
  uw_off     = new Image;
  uw_off.src = "images/logo_UW.jpg";
  wiki_on      = new Image;
  wiki_on.src  = "images/reverse_logo_wikipedia.jpg";
  wiki_off     = new Image;
  wiki_off.src = "images/logo_wikipedia.jpg";
  }
function img_act(imgName)
{
 if (browserTest == "good")
  {
  imgOn = eval(imgName + "_on.src");
  document [imgName].src = imgOn;
  }
}
function img_inact(imgName)
{
 if (browserTest == "good")
  {
  imgOff = eval(imgName + "_off.src");
  document [imgName].src = imgOff;
  }
}