function swap(id,newSrc) {
	var theImage = locateImage (id);
	if (theImage) {
		theImage.src = newSrc;
	}
}


function locateImage(name) {
	var theImage = false;
	if (document.images) {
		theImage = document.images [name];
	}
	if (theImage){
		return theImage;
	}
	return (false);
}