var lastImageSrc = "";

function swapImage (imageRef, newImageSrc)
{
	return false;
	
	if (newImageSrc == "") //swap back
	{
		imageRef.src = lastImageSrc;
		return;
	}
	
	imageSrc = imageRef.src;
	lastImageSrc = imageSrc;
	imageExt = getFileEXT(imageSrc);
	
	newSource = imageSrc.replace(imageExt, newImageSrc);
	imageRef.src = newSource;
	
}

function getFileEXT (filename)
{
	extStart = filename.lastIndexOf(".");
	
	fileEXT = filename.substring(extStart);
	return fileEXT;
}