{
yen0= new Image();
yen0.src = "image/0yen.gif";
yen1 = new Image();
yen1.src = "image/0yena.gif";
}
function imgOn(img){
turnOn = eval(img + "1.src");
document[img].src = turnOn;
}
function imgOff(img){
turnOff = eval(img + "0.src");
document[img].src = turnOff;
}