function logout (){
	var pathnameTmp = (window.location.pathname);
	var pathname = pathnameTmp.toLowerCase();
	
	if (navigator.appName =='Netscape') {
	window.open('/ph.nsf/wLogout?OpenPage','Logout','resizable=yes,screenX=150,screenY=200,width=550,height=420');
	} else {
	window.open('/ph.nsf/wLogout?OpenPage','Logout','resizable=yes,screenX=150,screenY=200,width=550,height=460');
	}
}