if (document.images) {
btn01on = new Image(114,30);btn01on.src = "../images/btn01_ov.jpg";
btn02on = new Image(114,30);btn02on.src = "../images/btn02_ov.jpg";
btn03on = new Image(114,30);btn03on.src = "../images/btn03_ov.jpg";
btn04on = new Image(114,30);btn04on.src = "../images/btn04_ov.jpg";
btn05on = new Image(114,30);btn05on.src = "../images/btn05_ov.jpg";
btn06on = new Image(114,30);btn06on.src = "../images/btn06_ov.jpg";
btn07on = new Image(114,30);btn07on.src = "../images/btn07_ov.jpg";

btn01off = new Image(114,30);btn01off.src = "../images/btn01.jpg";
btn02off = new Image(114,30);btn02off.src = "../images/btn02.jpg";
btn03off = new Image(114,30);btn03off.src = "../images/btn03.jpg";
btn04off = new Image(114,30);btn04off.src = "../images/btn04.jpg";
btn05off = new Image(114,30);btn05off.src = "../images/btn05.jpg";
btn06off = new Image(114,30);btn06off.src = "../images/btn06.jpg";
btn07off = new Image(114,30);btn07off.src = "../images/btn07.jpg";
}

function turnOn(imageName) {
if (document.images) {
document[imageName].src = eval(imageName + "on.src");
  }	
}

function turnOff(imageName) {
if (document.images) {
document[imageName].src = eval(imageName + "off.src");
  }
}