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/eng/ui/btns/home-over.gif");
	contact_over = newImage("/images/eng/ui/btns/contact-over.gif");
	search_over = newImage("/images/eng/framework/search-over.gif");
	en_over = newImage("/images/interface/top-bar/en-over.gif");
	de_over = newImage("/images/interface/top-bar/de-over.gif");
	es_over = newImage("/images/interface/top-bar/es-over.gif");
	fr_over = newImage("/images/interface/top-bar/fr-over.gif");
	it_over = newImage("/images/interface/top-bar/it-over.gif");
	ja_over = newImage("/images/interface/top-bar/ja-over.gif");
	zh_cn_over = newImage("/images/interface/top-bar/zh_cn-over.gif");
	zh_tw_over = newImage("/images/interface/top-bar/zh_tw-over.gif");
	ko_over = newImage("/images/interface/top-bar/ko-over.gif");
	// list images preload 
	arrow_list_link = newImage("/images/interface/arrow_list_link.gif");	
	arrow_list_link_down = newImage("/images/interface/arrow_list_link_down.gif");	
	text = newImage("/images/interface/text.gif");	
	pdf = newImage("/images/interface/pdf.gif");	
	preloadFlag = true;
	}
}


preloadImages();