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
}


function helpwnd(url) {
	var hwin = window.open(url,"helpwnd","width=500,height=500,scrollbars=yes,toolbar=no,resizable=0")
	hwin.focus()
}

var cookieName = "viewintro";
function setIntro() {
	var d = new Date()
	d.setYear(d.getYear()+1)
	document.cookie = escape(cookieName) + '=yes; path = /; expires=' + d.toUTCString()
}
function getIntro() {
	var cookieValue = 'no'
	var posName = document.cookie.indexOf(escape(cookieName) + '=')
	if (posName != -1) {
		var posValue = posName + (escape(cookieName) + '=').length
		var endPos = document.cookie.indexOf(';', posValue)
		if (endPos != -1) cookieValue = unescape(document.cookie.substring(posValue, endPos))
		else cookieValue = unescape(document.cookie.substring(posValue))
	}
	return (cookieValue == 'yes')
}