intImage = 2;
function swapImage() {
switch (intImage) {
 case 1:
   IMG1.src = "_Images/down1.jpg"
   intImage = 2
   return(false);
case 2:
   IMG1.src = "_Images/up1.jpg"
   intImage = 1
   return(false);
 }
}
intImage2 = 2;
function swapImage2() {
switch (intImage2) {
 case 1:
   IMG2.src = "_Images/down2.jpg"
   intImage2 = 2
   return(false);
case 2:
   IMG2.src = "_Images/up2.jpg"
   intImage2 = 1
   return(false);
 }
}