if (document.images) {
	oneOff = new Image
	oneOn = new Image
	twoOff = new Image
	twoOn = new Image
	threeOff = new Image
	threeOn = new Image
	fourOff = new Image
	fourOn = new Image
	fiveOff = new Image
	fiveOn = new Image
	sixOff = new Image
	sixOn = new Image

	oneOff.src = "images/button1-off.jpg"
	oneOn.src = "images/button1-on.jpg"
	twoOff.src = "images/button2-off.jpg"
	twoOn.src = "images/button2-on.jpg"
	threeOff.src = "images/button3-off.jpg"
	threeOn.src = "images/button3-on.jpg"
	fourOff.src = "images/button4-off.jpg"
	fourOn.src = "images/button4-on.jpg"
	fiveOff.src = "images/button5-off.jpg"
	fiveOn.src = "images/button5-on.jpg"
	sixOff.src = "images/button6-off.jpg"
	sixOn.src = "images/button6-on.jpg"
}

function chgImg(imgField,newImg) {
	if (document.images) {
		document[imgField].src= eval(newImg + ".src")
	}
}