var date = new Date();
var days = new Array("Sunday!", "Monday!", "Tuesday!", "Wednesday!", "Thursday!", "Friday!", "Saturday!");
var greeting = "";

var hourValue = date.getHours();

if (hourValue < 5) {
	greeting = "Good witching hour, ";
} else if (hourValue < 12) {
	greeting = "Good morning, ";
} else if (hourValue < 17) {
	greeting = "Good afternoon, ";
} else {
	greeting = "Good evening, ";
}

greeting += days[date.getDay()];

document.write(greeting);