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hOff = new Image();
hOff.src = "images/18.0.gif";

hOn = new Image();
hOn.src = "images/18.1.gif";

aOff = new Image();
aOff.src = "images/23.0.gif";

aOn = new Image();
aOn.src = "images/23.1.gif";

oOff = new Image();
oOff.src = "images/31.0.gif";

oOn = new Image();
oOn.src = "images/31.1.gif";

fOff = new Image();
fOff.src = "images/33.0.gif";

fOn = new Image();
fOn.src = "images/33.1.gif";

cOff = new Image();
cOff.src = "images/35.0.gif";

cOn = new Image();
cOn.src = "images/35.1.gif";

function On(imgName) {
        img = eval(imgName + "On.src");
        document[imgName].src = img;
}

function Off(imgName) {
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        document[imgName].src = img;
}
// -->