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) {
		babout_over = newImage('/images/nav/buttons/mb_about_on.gif');
		sabout_over = newImage('/images/nav/sections/about/s_about.gif');
		bproduct_over = newImage('/images/nav/buttons/mb_product_on.gif');
		sproduct_over = newImage('/images/nav/sections/about/s_product.gif');
		bpress_over = newImage('/images/nav/buttons/mb_press_on.gif');
		spress_over = newImage('/images/nav/sections/about/s_press.gif');
		binvest_over = newImage('/images/nav/buttons/mb_invest_on.gif');
		sinvest_over = newImage('/images/nav/sections/about/s_invest.gif');
		bemploy_over = newImage('/images/nav/buttons/mb_employ_on.gif');
		semploy_over = newImage('/images/nav/sections/about/s_employ.gif');
		sn1_over = newImage('/images/nav/sn/about/news_on.gif');
		sn2_over = newImage('/images/nav/sn/about/manage_on.gif');
		sn3_over = newImage('/images/nav/sn/about/trophy_on.gif');
		sn4_over = newImage('/images/nav/sn/about/history_on.gif');
		sn5_over = newImage('/images/nav/sn/about/community_on.gif');
		preloadFlag = true;
	}
}