function fOpen(_nId, _bCheck) {
	if(_bCheck) {
		for(i = 0; i < document.getElementsByTagName("tr").length; i++) {
			if(document.getElementsByTagName("tr")[i].id.substring(0, 3) == "sub") {
				document.getElementsByTagName("tr")[i].style.display = "none";
			}
		}
	}
	try {
		if(fId("sub_" + _nId).style.display == "none") {
			fId("sub_" + _nId).style.display = "";
		} else {
			fId("sub_" + _nId).style.display = "none";
		}
	} catch(e) {
	}
	if(_bCheck) {
		fCheckMenupoint(_nId);
	}
}