function imageOn(imgName){
	document [imgName].src = "/images/point.gif"
}

function imageOff(imgName){
	document [imgName].src = "/images/pointclear.gif"
}

function imageChange(imgName, fileName){
	document [imgName].src = "/images/" + fileName
}

function imageChangeIn(imgName){
	document [imgName].src = '/images/' + imgName + '.on.gif';
}

function imageChangeOut(imgName){
	document [imgName].src = '/images/' + imgName + '.off.gif';
}