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) {

		headerhome_over = newImage("../images/headerhome-over.jpg");

		headerservices_over = newImage("../images/headerservices-over.jpg");

		headerinside_over = newImage("../images/headerinside-over.jpg");

		headernews_over = newImage("../images/headernews-over.jpg");

		preloadFlag = true;

	}

}