if (document.images) {
	var onImgArray = new Array()
	onImgArray[1] = new Image
	onImgArray[2] = new Image
	onImgArray[3] = new Image
	onImgArray[4] = new Image
	onImgArray[5] = new Image
	onImgArray[6] = new Image
	onImgArray[7] = new Image
	onImgArray[8] = new Image
	onImgArray[1].src = "images/menu_home_on.jpg"
	onImgArray[2].src = "images/menu_why_ns_on.jpg"
	onImgArray[3].src = "images/menu_news_on.jpg"
	onImgArray[4].src = "images/menu_program_on.jpg"
	onImgArray[5].src = "images/menu_services_on.jpg"
	onImgArray[6].src = "images/menu_links_on.jpg"
	onImgArray[7].src = "images/menu_contact_on.jpg"
	onImgArray[8].src = "images/menu_quote_on.jpg"

	var offImgArray = new Array()
	offImgArray[1] = new Image
	offImgArray[2] = new Image
	offImgArray[3] = new Image
	offImgArray[4] = new Image
	offImgArray[5] = new Image
	offImgArray[6] = new Image
	offImgArray[7] = new Image
	offImgArray[8] = new Image
	offImgArray[1].src = "images/menu_home.jpg"
	offImgArray[2].src = "images/menu_why_ns.jpg"
	offImgArray[3].src = "images/menu_news.jpg"
	offImgArray[4].src = "images/menu_program.jpg"
	offImgArray[5].src = "images/menu_services.jpg"
	offImgArray[6].src = "images/menu_links.jpg"
	offImgArray[7].src = "images/menu_contact.jpg"
	offImgArray[8].src = "images/menu_quote.jpg"
}

function imageOn(i) {
	if (document.images) {
		document.images["btn" + i].src = onImgArray[i].src
	}
}
function imageOff(i) {
	if (document.images) {
		document.images["btn" + i].src = offImgArray[i].src
	}
}