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) {
		whatsnew_japanese_over = newImage("images/whatsnewindex_japanese_not-over.gif");
		whatsnew_english_over = newImage("images/whatsnewindex_english_not-over.gif");
		index_japanese_over = newImage("images/index_japanese_not-over.gif");
		index_english_over = newImage("images/index_english_not-over.gif");
		indexmenu_artist_e_over = newImage("images/indexmenu_artist_e-over.gif");
		indexmenu_program_e_over = newImage("images/indexmenu_program_e-over.gif");
		indexmenu_commentary_e_over = newImage("images/indexmenu_commentary_e-over.gif");
		indexmenu_tickets_e_over = newImage("images/indexmenu_tickets_e-over.gif");
		indexmenu_access_e_over = newImage("images/indexmenu_access_e-over.gif");
		indexmenu_about_e_over = newImage("images/indexmenu_about_e-over.gif");
		indexmenu_pre_e_over = newImage("images/indexmenu_pre_e-over.gif");
		indexmenu_faq_e_over = newImage("images/indexmenu_faq_e-over.gif");
		indexmenu_contact_e_over = newImage("images/indexmenu_contact_e-over.gif");
		preloadFlag = true;
	}
}