var strImagePath = "/images/";
	
	function newImage(strFilename) {
		strFilename = strImagePath + strFilename;
		if (document.images) {
			objTempImage = new Image();
			objTempImage.src = strFilename;
			return objTempImage;
		}
	}
	
	nav01 = newImage("but-previous-off.gif");
	nav01Over = newImage("but-previous-on.gif");
	nav02 = newImage("but-home-off.gif");
	nav02Over = newImage("but-home-on.gif");
	nav03 = newImage("but-next-off.gif");
	nav03Over = newImage("but-next-on.gif");

	function changeImage(strLocation, strImage) {
		document.images[strLocation].src = eval(strImage + ".src");
}