Cara membuat background blog berubah secara otomatis (menurut hari)

Tutorialnya :

• Pada DashBoard, Klik Template
• Kemudian Pilih Edit HTML
• Cari kode </head>
• Copy Paste kode script di bawah ini dan letakkan tepat di atas kode </head>

<script type="text/javascript">
today = new Date();
day = today.getDay();
    sunday = "URL Gambar Sobat";
    monday = "URL Gambar Sobat";
    tuesday = "URL Gambar Sobat";
    wednesday = "URL Gambar Sobat";
    friday = "URL Gambar Sobat";
    thursday = "URL Gambar Sobat";
    saturday = "URL Gambar Sobat";
arday = new Array(sunday, monday, tuesday, wednesday, thursday, friday, saturday);
document.write("<style>body{background: url(" + arday[day] + "); background-repeat: repeat; background-attachment:fixed;}</style>");
</script>