day = new Date()
hr = day.getHours()
hr1 = hr - 12

if (hr < "6") {
document.write("Good Morning!   and   Welcome to")
}

else if (hr < "12") {
document.write("Good Morning!   and   Welcome to")
}

else if (hr < "13") {
document.write("Good Afternoon!   and   Welcome to")
}

else if (hr < "17") {
document.write("Good Afternoon!   and   Welcome to")
}

else if (hr < "24") {
document.write("Good Evening!   and   Welcome to")
}