//Pre-load images and initialize 2 arrays
preimage= new Array()
hiddenImage= new Array()
 //Load image files names into the arrays
preimage[0]="/images/loading.gif";
preimage[2]="/images/spacer2.gif";
 var imageCount=2
 //Load images into memory cache
 for(i=0; i<=imageCount; i++) {
  hiddenImage[i]= new Image()
  hiddenImage[i].src=preimage[i];
 }

//Function to change Images
//Display a new image by 'hiddenImage[]' each time this function is called
function SwapOut() {
 document.swapimg.src=hiddenImage[imageCount].src;
   imageCount++;
 if (imageCount >=3) { imageCount=0
 }
}