<!--
	var imageArr;

	imageArr = new Array();
	
	var imageCount = 0;  // number of images loaded
	
	// preloads an image and its substitute
	function ImagePreload(imageName, imageSrc1, imageSrc2)
	{
		imageArr[imageCount] = new Array(3);
		imageArr[imageCount][0] = imageName;
		imageArr[imageCount][1] = new Image();
		imageArr[imageCount][1].src = imageSrc1;
		imageArr[imageCount][2] = new Image();
		imageArr[imageCount][2].src = imageSrc2;
	
		imageCount++;
	}
	
	// switches to the second image
	function ImageSwitch(imageName)
	{				
		for (imageIndex = 0; imageIndex < imageCount; imageIndex++)
		{
			if (document.images[imageArr[imageIndex][0]] != null)
			{
				if(imageName == imageArr[imageIndex][0])
				{   // switch to second image
					document.images[imageArr[imageIndex][0]].src = imageArr[imageIndex][2].src;
				}
				else
				{   // all others are reset to original image
					document.images[imageArr[imageIndex][0]].src = imageArr[imageIndex][1].src;
				}
			}
		}
	}
	
	// reverts all to original image
	function ImageRevert()
	{
		for (imageIndex = 0; imageIndex < imageCount; imageIndex++)
		{
			if (document.images[imageArr[imageIndex][0]] != null)
			{
				document.images[imageArr[imageIndex][0]].src = imageArr[imageIndex][1].src;
			}
		}
	}
	
// -->