function changePage(page) {
	var subtitle = "";
	switch (page) {
	   case 'news.html' : subtitle = "Home"; break;
	   case 'service.html' : subtitle = "Service Projects"; break;
	   case 'history.html' : subtitle = "Chapter History"; break;
	   case '/cgi-bin/list_members.cgi' : subtitle = "Membership/Contact Information"; break;
	   case 'members/members.html' : subtitle = "Members-Only Page"; break;
	   case 'alumni.html'  : subtitle = "Alumni Page"; break;
	   case 'admin/admin.html'   : subtitle = "Web Administration"; break;
	}
	document.getElementById("subtitle_div").innerHTML = "- " + subtitle + " -";
	document.getElementById("main_frame").src = page;
}