<!--

if (document.images) {
img1_ = new Image();
img1_.src = "images/mail.gif";
img1o = new Image();
img1o.src = "images/mailo.gif";

}

function On(imageName) {
if (document.images) {
document[imageName].src = eval(imageName + "o.src");
}
}

function Off(imageName) {
if (document.images) {
document[imageName].src = eval(imageName + "_.src");
}
}

// -->