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.jpg");

		read_over = newImage("images/read-over.jpg");

		pdf_over = newImage("images/pdf-over.jpg");

		previous_pdf_over = newImage("images/previous-pdf_over.jpg");

		previous_over = newImage("images/previous-over.jpg");

		guestbook_over = newImage("images/guestbook-over.jpg");

		advertisers_index_over = newImage("images/advertisers_index-over.jpg");

		links_over = newImage("images/links-over.jpg");

		subscribe_over = newImage("images/subscribe-over.jpg");

		contact_us_over = newImage("images/contact_us-over.jpg");

		preloadFlag = true;

	}

}