function setMenuItem() {
	if (!document.getElementsByTagName) return;
	
	var menuPrefix = "nav-";
	var menuTop = document.getElementById('nav-top');
	var menuMain = document.getElementById('nav');
	
	var menuTopItems = menuTop.getElementsByTagName("li");
	var menuMainItems = menuMain.getElementsByTagName("li");
	
	var URL = window.location.toString();
	var currentSection = "home";
	
	if (URL.indexOf('/about/') != -1) {
		currentSection = "about";
	} else if (URL.indexOf("/contact/") != -1) {
		currentSection = "contact";
	} else if (URL.indexOf("/internships/") != -1) {
		currentSection = "internships";
	} else if (URL.indexOf("/news/") != -1) {
		currentSection = "news";
	} else if (URL.indexOf("/people/") != -1) {
		currentSection = "people";
	} else if (URL.indexOf("/research/") != -1) {
		currentSection = "research";
	} else if (URL.indexOf("/resources/") != -1) {
		currentSection = "resources";
	} else if (URL.indexOf("/undergrad/") != -1) {
		currentSection = "undergrad";
	} else if (URL.indexOf("/search/") != -1) {
		currentSection = "search";
	} else if (URL.indexOf("/students/") != -1) {
		currentSection = "students";
	}
	
	
	
	// loop through all the top menu items and remove active classes
	for (var i=0; i<menuTop.length; i++) {
		menuTop[i].removeAttribute('class');
	}
	// loop through all the main menu items and remove active classes
	for (var i=0; i<menuMain.length; i++) {
		menuMain[i].removeAttribute('class');
	}
	
	var menuItemSelected = document.getElementById(menuPrefix + currentSection);
	menuItemSelected.className = "selected";
	
}
addEvent(window,'load',setMenuItem);