var preloadFlag=false
var __page_popup_images = {};
function loadImage(name, src) {
  __page_popup_images[name] = new Image()
  __page_popup_images[name].src = src
}

function changeImage(dpic, pic) {
  if (document.images && (preloadFlag == true))
    document.images[dpic].src=__page_popup_images[pic].src
}

function enable(what) {
  changeImage(what, what+'_')
}

function disable(what) {
  changeImage(what, what)
}

var isNetscape=false
var isNS4=false
if (navigator.appName == "Netscape") {
  isNetscape = true
  if (navigator.product!='Gecko') {
    isNS4 = true
  }else{
    isNS4 = false
//    document.all = document.getElementsByTagName("*")
  }
}else{
  isNetscape = false
  isNS4 = false
}