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) {
		Header01_06_over = newImage("images/Header01_06-over.jpg");
		Header01_08_over = newImage("images/Header01_08-over.jpg");
		Header01_10_over = newImage("images/Header01_10-over.jpg");
		Header01_12_over = newImage("images/Header01_12-over.jpg");
		Header01_14_over = newImage("images/Header01_14-over.jpg");
		Header01_16_over = newImage("images/Header01_16-over.jpg");
		preloadFlag = true;
	}
}