function topframe() { if (top.frames.length > 0) { top.location.href=self.location; } }
function change_pic_by_name(name, image) {
	path = prep + 'images/layout_1';
	if (document.images) {
		img = path + '/' + image;
		document[name].src = img;
	}
}
function changeMapImageByName(name, image) {
	path = prep + 'images/hotelmap';
	if (document.images) {
		img = path + '/' + image;
		document[name].src = img;
	}
}