function greeting() {
    now = new Date()
    h = now.getHours()
    if (h < 6)
        document.write("Godnat ")
    if (h > 5) if (h < 9)
        document.write("Godmorgen ")
    if (h < 12) if (h > 8)
        document.write("God formiddag ")
    if (h < 15) if (h > 11)
        document.write("Goddag ")
    if (h < 18) if (h > 14)
        document.write("God eftermiddag ")
    if (h < 24) if (h > 17)
        document.write("Godaften ")
}