if (document.images) {
button1_on = new Image(122,50);
button1_on.src = "/wales/bllcks/images/gui/button1_on.gif";
button1_off = new Image(122,50);
button1_off.src = "/wales/bllcks/images/gui/button1_off.gif";

button2_on = new Image(122,50);
button2_on.src = "/wales/bllcks/images/gui/button2_on.gif";
button2_off = new Image(122,50);
button2_off.src = "/wales/bllcks/images/gui/button2_off.gif";

button3_on = new Image(122,50);
button3_on.src = "/wales/bllcks/images/gui/button3_on.gif";
button3_off = new Image(122,50);
button3_off.src = "/wales/bllcks/images/gui/button3_off.gif";

button4_on = new Image(122,50);
button4_on.src = "/wales/bllcks/images/gui/button4_on.gif";
button4_off = new Image(122,50);
button4_off.src = "/wales/bllcks/images/gui/button4_off.gif";

button5_on = new Image(122,50);
button5_on.src = "/wales/bllcks/images/gui/button5_on.gif";
button5_off = new Image(122,50);
button5_off.src = "/wales/bllcks/images/gui/button5_off.gif";
}

function switchto(name, on) {
if (document.images) {
    image = eval(name + (on == 1 ? "on.src" : "off.src"));
    if (image != "") {
        document[name].src = image;
    }
  }
}