// Image swap function for mouseOvers
	function swapImage(imgName, newImage) {
			newImage = "../images/" + newImage;  // Note: to save bandwidth, assume all images in ../image directory
  		  	newName = new Image();
   	 		newName.src = newImage; // new location of the image
  		  	document.images[imgName].src = newName.src;
   	}