navigator.appName
navigator.appVersion

var ie, nn4, dom

if(document.all){
ie = true
else{
ie = false
}

else if(document.layers){
nn4 = true
else{
nn4 = false
}

else if(document.getElementById){
dom = true
else{
dom = false
}

var nn4 = (document.layers) ? true : false
var ie = (document.all) ? true : false
var dom = (document.getElementById && !document.all) ? true : false

function showIt(id) {
layer = browser(id)
	if(nn4){
	layer.visibility = "visible"
	}
	else{
	layer.style.visibility = "visible"
	}
}

function hideIt(id) {
layer = browser(id)
	if(nn4){
	layer.visibility = "hidden"
	}
	else{
	layer.style.visibility = "hidden"
	}
}