welcome();

function welcome()
{
var thedate;
var thehour;
thedate = new Date();
thehour = thedate.getHours();
if (thehour <12)
  document.write("Good morning!")
else if (thehour < 17)
  document.write("Good afternoon!")
else if (thehour < 24)
  document.write("Good evening!")
else
  document.write("Good morning!")
}

document.write(" Nice to see you, Enjoy your visit!")