var strMenuOn = 'home'; 
var strMenuOff = ''; 

$(document).ready(function() { 
	setMenuHighlight();
});

function setMenuHighlight(){
	$('#menu a#home').addClass('selected');
}

function selectMenuHighlight(nextStg){
	strMenuOff = strMenuOn;
	strMenuOn = nextStg; 
	$('#menu a#'+ strMenuOff).removeClass('selected');
	$('#menu a#'+ strMenuOn).addClass('selected');
}