function preloadImages(preFix, sTart, fInish, pAth) {
	if (document.images) {
		for (var i=sTart; i<=fInish; i++) {
			//preload on images
			newImage = preFix + i + "on = new Image()";
			loCation = pAth + preFix + i + "on.gif";
			newImageSRC = preFix + i + "on.src = \"" + loCation + "\"";
			eval(newImage);
			eval(newImageSRC);

			//preload off images
			newImage = preFix + i + "off = new Image()";
			loCation = pAth + preFix + i + "off.gif";
			newImageSRC = preFix + i + "off.src = \"" + loCation + "\"";
			eval(newImage);
			eval(newImageSRC);
		};
	};
};

function change(Name,OnOff) {
	if (document.images) {
		document [Name].src = eval(Name + OnOff + ".src");
	};
};

preloadImages('m',1,7,'/images/');