function imgOn(imgName) {
	document [imgName].src = "on/" + (imgName) + ".gif";
}

function gimgOn(imgName) {
	document [imgName].src = "on/g-" + (imgName) + ".gif";
}

function imgOff(imgName) {
	document [imgName].src = "off/" + (imgName) + ".gif";
}