{

a3_on=new Image;
a3_on.src="a3_on.gif";
a3_off=new Image;
a3_off.src="a3_off.gif";

b3_on=new Image;
b3_on.src="b3_on.gif";
b3_off=new Image;
b3_off.src="b3_off.gif";

c3_on=new Image;
c3_on.src="c3_on.gif";
c3_off=new Image;
c3_off.src="c3_off.gif";

d3_on=new Image;
d3_on.src="d3_on.gif";
d3_off=new Image;
d3_off.src="d3_off.gif";

e3_on=new Image;
e3_on.src="e3_on.gif";
e3_off=new Image;
e3_off.src="e3_off.gif";

f3_on=new Image;
f3_on.src="f3_on.gif";
f3_off=new Image;
f3_off.src="f3_off.gif";

}

function rollIn(imgName, picName)
{
                document[imgName].src=eval(picName + "on.src");
}

function rollOut(imgName, picName)
{
                document[imgName].src=eval(picName + "off.src");
}