function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function imgChange() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<imgChange.arguments.length; i+=2) {
			document[imgChange.arguments[i]].src = imgChange.arguments[i+1];
		}
	}
}

var preloadFlag = false;

function imgPreload() {
	if (document.images) {
		over_menu_1 = newImage('images/img_menu_1o.gif');
		over_menu_2 = newImage('images/img_menu_2o.gif');
		over_menu_3 = newImage('images/img_menu_3o.gif');
		over_menu_4 = newImage('images/img_menu_4o.gif');
		over_menu_5 = newImage('images/img_menu_5o.gif');
		preloadFlag = true;
	}
}

// ウィンドウオープン
function openWindow(url, name, w, h) {
	if (name == undefined) name='NARUKO_RYOKAN';
	if (w == undefined) w=400;
	if (h == undefined) h=300;
	window.open(url, name, 'toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=yes,height=' + h + ',width=' + w);
}

// お問い合わせ
function openContact() {
	openWindow('postmail/postmail.html', 'NARUKO_RYOKAN_CONTACT', 700, 650);
}