if (document.images) {
img1on = new Image();         // On Mouseover
img1on.src ="http://www.andrewmallett.net/logos/amn_white.gif";


img1off = new Image();        // On Mouseoff
img1off.src ="http://www.andrewmallett.net/logos/amn_scar.gif";

}

// Function to 'activate' images.
function imgOn(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "on.src");
}
}

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