var d = new Date()
var weekday=new Array(7)
weekday[0]="Sunday"
weekday[1]="Monday"
weekday[2]="Tuesday"
weekday[3]="Wednesday"
weekday[4]="Thursday"
weekday[5]="Friday"
weekday[6]="Saturday"

var time = d.getHours()

if (time<10)
{
document.write("<b>Good morning this " + weekday[d.getDay()] + "</b>")
}
else if (time>10 && time<16)
{
document.write("<b>Good day this " + weekday[d.getDay()] + "</b>")
}
else
{
document.write("<b>Hello this " + weekday[d.getDay()] + "</b>")
}