datetoday = new Date(); 
timenow=datetoday.getTime(); 
datetoday.setTime(timenow); 
thehour = datetoday.getHours(); 
if (thehour >17) display = "Evening"; 
else if (thehour >12) display = "Afternoon"; 
else display = "Morning"; 
var greeting = ("Good " + display); 
document.write(greeting);