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) {
		home_b_over = newImage("images/home_b-over.jpg");
		services_b_over = newImage("images/services_b-over.jpg");
		portfolio_b_over = newImage("images/portfolio_b-over.jpg");
		about_us_b_over = newImage("images/about_us_b-over.jpg");
		contact_us_b_over = newImage("images/contact-us_b-over.jpg");
		preloadFlag = true;
	}
}


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) {
		back_forward_01_over = newImage("images/back_forward_01-over.gif");
		back_forward_02_over = newImage("images/back_forward_02-over.gif");
		preloadFlag = true;
	}
}