intImage1 = 2;
intImage2 = 2;
intImage3 = 2;
intImage4 = 2;
function swapImage1() {
switch (intImage1) {
 case 1:
   image.src = "images/buttons/downloads_brochures.jpg"
   intImage1 = 2
   return(false);
case 2:
   image.src = "images/buttons/downloads_brochures_minus.jpg"
   intImage1 = 1
   return(false);
 }
}

function swapImage2() {
switch (intImage2) {
 case 1:
   image2.src = "images/buttons/downloads_handbooks.jpg"
   intImage2 = 2
   return(false);
case 2:
   image2.src = "images/buttons/downloads_handbooks_minus.jpg"
   intImage2 = 1
   return(false);
 }
}

function swapImage3() {
switch (intImage3) {
 case 1:
   image3.src = "images/buttons/downloads_parts.jpg"
   intImage3 = 2
   return(false);
case 2:
   image3.src = "images/buttons/downloads_parts_minus.jpg"
   intImage3 = 1
   return(false);
 }
}

function swapImage4() {
switch (intImage4) {
 case 1:
   image4.src = "images/buttons/downloads_image.jpg"
   intImage4 = 2
   return(false);
case 2:
   image4.src = "images/buttons/downloads_image_minus.jpg"
   intImage4 = 1
   return(false);
 }
}