<!--
if (document.images) {
image2on = new Image();
image2on.src = "b2.gif";
image2off = new Image();
image2off.src = "b1.gif";

}

function turnOn(imageName) {
if (document.images) {
document[imageName].src = eval(imageName + "on.src");
}
}

function turnOff(imageName) {
if (document.images) {
document[imageName].src = eval(imageName + "off.src");
}
}
 -->