<!--

function ImgOn(imgRef) {
	var imgName 	= eval("document." + imgRef);
	var imgSrc	= '/images/button-go-on.png';

	if (imgName) {
		imgName.src = imgSrc;
		}
	}

function ImgOff(imgName) {
	var imgName 	= eval("document." + imgName);
	var imgSrc	= '/images/button-go-off.png';

	if (imgName) {
		imgName.src = imgSrc;
		}
	}
-->