var openID = '';
var timeoutID = '';

function SC_startCloser() {
	if (openID != '') {
		timeoutID = window.setTimeout("SC_triggerClose()", 500);
	}
}

function SC_stopCloser() {
	if (timeoutID != '') {
		clearTimeout(timeoutID);
		timeoutID = '';
	}
}

function SC_triggerClose() {
	if (timeoutID != '') {
		SC_closeMenu();
		timeoutID = '';
	}
}

function SC_displayMenu(id) {
	SC_stopCloser();
	SC_closeMenu();
	document.getElementById(id).style.display = 'block';
	openID = id;
}

function SC_closeMenu() {
	if (openID != '') {
		document.getElementById(openID).style.display = 'none';
		openID = '';
	}
}