function toggle_spoiler(self, lang_hide_spoiler, lang_show_spoiler) {
	var spoiler_box = self.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0];

	if (spoiler_box.style.display == 'none') {
		spoiler_box.style.display = "";
		self.value = lang_hide_spoiler;
	} else {
		spoiler_box.style.display = "none";
		self.value = lang_show_spoiler;
	}
}