if (document.images) {
Englishon = new Image(); // Active images
Englishon.src = "Images/btn-English-on.gif";
Englishoff = new Image(); // Inactive images
Englishoff.src = "Images/btn-English-off.gif";

Farsion = new Image(); // Active images
Farsion.src = "Images/btn-Farsi-on.gif";
Farsioff = new Image(); // Inactive images
Farsioff.src = "Images/btn-Farsi-off.gif";

Abouton = new Image(); // Active images
Abouton.src = "Images/btn-About-on.gif";
Aboutoff = new Image(); // Inactive images
Aboutoff.src = "Images/btn-About-off.gif";

Guitarson = new Image(); // Active images
Guitarson.src = "Images/btn-Guitars-on.gif";
Guitarsoff = new Image(); // Inactive images
Guitarsoff.src = "Images/btn-Guitars-off.gif";

Videoson = new Image(); // Active images
Videoson.src = "Images/btn-Videos-on.gif";
Videosoff = new Image(); // Inactive images
Videosoff.src = "Images/btn-Videos-off.gif";

Contacton = new Image(); // Active images
Contacton.src = "Images/btn-Contact-on.gif";
Contactoff = new Image(); // Inactive images
Contactoff.src = "Images/btn-Contact-off.gif";

Pictureson = new Image(); // Active images
Pictureson.src = "Images/btn-Pictures-on.gif";
Picturesoff = new Image(); // Inactive images
Picturesoff.src = "Images/btn-Pictures-off.gif";

}

function imgOn(imgName) {

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

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