var aryImages = new Array(2);

aryImages[0] = "/images/large/portrait1.jpg";
aryImages[1] = "/images/large/portrait2.jpg";
aryImages[2] = "/images/large/portrait3.jpg";
aryImages[3] = "/images/large/portrait4.jpg";
aryImages[4] = "/images/large/portrait5.jpg";
aryImages[5] = "/images/large/portrait6.jpg";
aryImages[6] = "/images/large/portrait7.jpg";
aryImages[7] = "/images/large/portrait8.jpg";
aryImages[8] = "/images/large/portrait9.jpg";

for (i=0; i < aryImages.length; i++) {
var preload = new Image();
preload.src = aryImages[i];
}

function swap(imgIndex) {
document['imgMain'].src = aryImages[imgIndex];
}

/*
intImage = 2;
function swapImage() {
switch (intImage) {
 case 1:
   img1.src = "/images/thumbnails/portrait1.jpg"
   intImage = 2
   return(false);
case 2:
   img1.src = "/images/thumbnails/portrait2.jpg"
   intImage = 1
   return(false);
 }
}
*/