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_over = newImage("images/home-over.gif");

		nav_04_over = newImage("images/contact_over.gif");

		company_over = newImage("images/company-over.gif");

		products_over = newImage("images/products-over.gif");

		programs_over = newImage("images/programs-over.gif");

		capabilities_over = newImage("images/capabilities-over.gif");
        buynow_over = newImage("images/capabilities-over.gif");

		preloadFlag = true;

	}

}