today = new Date()
document.write ;if((today.getHours() >=5) && (today.getHours() <21)){
document.write("<img src='x-root/pics/earth_day.gif' alt='' width='225' height='88' border='0'>") 
}
if((today.getHours() >=21) && (today.getHours() <24)){
document.write("<img src='x-root/pics/earth_night.gif' alt='' width='225' height='88' border='0'>") 
}
if((today.getHours() >=0) && (today.getHours() <5)){
document.write("<img src='x-root/pics/earth_night.gif' alt='' width='225' height='88' border='0'>") 
}