function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		resume_over = newImage("images/resume-over.jpg");
		email_over = newImage("images/email-over.jpg");
		oralB = newImage("images/oralB-over.jpg");
		Visa_over = newImage("images/Visa-over.jpg");
		Mitsu_over = newImage("images/Mitsu-over.jpg");
		tkmaxx_over = newImage("images/tkmaxx-over.jpg");
		v8_over = newImage("images/v8-over.jpg");
		preloadFlag = true;
	}
}