function showMenu(index) {
	if ( index == 1 ) {
		document.getElementById('subMenuNolan').style.display = 'block';
		document.getElementById('subMenuXlite').style.display = 'none';
		document.getElementById('subMenuGrex').style.display = 'none';
	} else if ( index == 2 ) {
		document.getElementById('subMenuNolan').style.display = 'none';
		document.getElementById('subMenuXlite').style.display = 'block';
		document.getElementById('subMenuGrex').style.display = 'none';
	} else if ( index == 3 ) {
		document.getElementById('subMenuNolan').style.display = 'none';
		document.getElementById('subMenuXlite').style.display = 'none';
		document.getElementById('subMenuGrex').style.display = 'block';
	} else if ( index == 999 ) {
	} else {
		document.getElementById('subMenuNolan').style.display = 'none';
		document.getElementById('subMenuXlite').style.display = 'none';
		document.getElementById('subMenuGrex').style.display = 'none';
	}
}