var data=new Date()
var page1="Guten Morgen und"
var page2="Guten Tag und"
var page3="Guten Abend und"
var page4="Gute Nacht und"

var hour=data.getHours()
if (hour<=5)
var page=page4
else if (hour<=11)
var page=page1
else if (hour<=19)
var page=page2
else if (hour<=23)
var page=page3
else 
var page=page4


document.write(" "+page+" ");