function bgChangeCastleHome(){
var now = new Date();
var hour = now.getHours();
if(hour < 5){
document.write('');
}
else if(hour > 4 && hour < 8){
document.write('');
}
else if(hour > 7 && hour < 17){
document.write('');
}
else if(hour > 16 && hour < 20){
document.write('');
}
else if(hour > 19){
document.write('');
}
}
function bgChangeSub(){
var now = new Date();
var hour = now.getHours();
if(hour < 5){
document.write('');
}
else if(hour > 4 && hour < 8){
document.write('');
}
else if(hour > 7 && hour < 17){
document.write('');
}
else if(hour > 16 && hour < 20){
document.write('');
}
else if(hour > 19){
document.write('');
}
}