but1 = new  Image;

but1.src = "images/but1.gif"

but1on = new Image;

but1on.src = "images/but1_on.gif";



but2 = new  Image;

but2.src = "images/but2.gif"

but2on = new Image;

but2on.src = "images/but2_on.gif";



but3 = new  Image;

but3.src = "images/but3.gif"

but3on = new Image;

but3on.src = "images/but3_on.gif";



but4 = new  Image;

but4.src = "images/but4.gif"

but4on = new Image;

but4on.src = "images/but4_on.gif";



but5 = new  Image;

but5.src = "images/but5.gif"

but5on = new Image;

but5on.src = "images/but5_on.gif";



but6 = new  Image;

but6.src = "images/but6.gif"

but6on = new Image;

but6on.src = "images/but6_on.gif";



but7 = new  Image;

but7.src = "images/but7.gif"

but7on = new Image;

but7on.src = "images/but7_on.gif";




function on(name)   {

        document[name].src = eval(name + "on.src");

}

function off(name)  {

        document[name].src = eval(name + ".src");

}