if (document.images)
  {
  // browser supports Image object, so preload all images
  pu_blank     = new Image()
  pu_blank.src = "pu_blank.gif"   // blank popup image
  pu_home      = new Image()
  pu_home.src  = "pu_home.gif"    // HOME popup image
  home         = new Image()
  home.src     = "home.gif"       // unlit HOME image
  home_on      = new Image()
  home_on.src  = "home_on.gif"    // lit HOME image
	pu_info      = new Image()
  pu_info.src  = "pu_info.gif"    // HOME popup image
  info         = new Image()
  info.src     = "info.gif"       // unlit INFO image
  info_on      = new Image()
  info_on.src  = "info_on.gif"    // lit INFO image

pu_store      = new Image()
  pu_store.src  = "pu_store.gif"    // HOME popup image
  store        = new Image()
  store.src    = "store.gif"      // unlit STORE image
  store_on     = new Image()
  store_on.src = "store_on.gif"   // lit STORE image

pu_link      = new Image()
  pu_link.src  = "pu_link.gif"    // HOME popup image
  link         = new Image()
  link.src     = "link.gif"       // unlit LINKS image
  link_on      = new Image()
  link_on.src  = "link_on.gif"    // lit LINKS image

pu_cont      = new Image()
  pu_cont.src  = "pu_cont.gif"    // HOME popup image
  cont         = new Image()
  cont.src     = "cont.gif"       // unlit CONTACT image
  cont_on      = new Image()
  cont_on.src  = "cont_on.gif"    // list CONTACT image
  }
else
  {
  // browser does NOT support Image object, so set all image vals to ""
  // to prevent errors from arising in onMouseOver/onMouseOut handlers
  pu_blank = ""; pu_home = ""
  home = ""; home_on = ""
  info = ""; info_on = ""
  store = ""; store_on = ""
  link = ""; link_on = "";
  cont = ""; cont_on = ""
  document.homeImg = ""; document.infoImg = ""; document.storeImg = ""
  document.linkImg = ""; document.contImg = ""; document.popupImg = ""
  }