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) {
		Chairman_over = newImage("images/Chairman-over.jpg");
		company_over = newImage("images/company-over.jpg");
		acquisition_over = newImage("images/acquisition-over.jpg");
		signature_over = newImage("images/signature-over.jpg");
		real_estate_over = newImage("images/real-estate-over.jpg");
		financial_over = newImage("images/financial-over.jpg");
		key_over = newImage("images/key-over.jpg");
		press_over = newImage("images/press-over.jpg");
		contact_over = newImage("images/contact-over.jpg");
		preloadFlag = true;
	}
}