<!-- Image files for map logo change to map -->
mapchg_h =new Image(); 
<!-- Replacement Image -->
mapchg_h.src = "htm/images/gmlogo.jpg";
mapchg_nh = new Image(); 
<!-- Original Image -->
mapchg_nh.src = "htm/images/littonsmall.jpg";
function mapchgover() {
document.mapchg.src=mapchg_h.src;
}
function mapchgout() {
document.mapchg.src=mapchg_nh.src;
}