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) {
		frst_img_over = newImage("images/menus/frst_img-over.gif");
		bak_img_over = newImage("images/menus/bak_img-over.gif");
		view_img_over = newImage("images/menus/view_img-over.gif");
		nxt_img_over = newImage("images/menus/nxt_img-over.gif");
		lst_img_over = newImage("images/menus/lst_img-over.gif");
		id1_over = newImage("images/menus/1-over.gif");
		id2_over = newImage("images/menus/2-over.gif");
		id3_over = newImage("images/menus/3-over.gif");
		id4_over = newImage("images/menus/4-over.gif");
		id5_over = newImage("images/menus/5-over.gif");
		id6_over = newImage("images/general/txt-over.gif");
		id7_over = newImage("images/menus/1i-over.gif");
		id8_over = newImage("images/about/about_txt-over.gif");
		about_over = newImage("images/menus/about-over.jpg");
		business_over = newImage("images/menus/business-over.jpg");
		portfolio_over = newImage("images/menus/portfolio-over.jpg");
		products_over = newImage("images/menus/products-over.jpg");
		preloadFlag = true;
	}
}