function welkom() {
var today = new Date ()
var hrs = today.getHours();
if (hrs < 5)
        document.write ("Nog wakker? <I>Ainda acordado?</I>");
else if (hrs < 12)
        document.write ("Goedemorgen! <I>Bom dia!</I>");
else if (hrs <= 18)
        document.write ("Goedemiddag! <I>Boa tarde!</I>");
else 
     	document.write ("Goedenavond! <I>Boa noite!</I>");  
}