var PHOTO = new Array('<img src="/eng/i/top_keyimage_1.jpg" width="579" height="211" alt="Oedo-Line Monzen-nakacho Tomioka-hachimangu" title="Oedo-Line Monzen-nakacho Tomioka-hachimangu" />',
                      '<img src="/eng/i/top_keyimage_2.jpg" width="579" height="211" alt="Mita-Line Onarimon Sta. Tokyo Tower" title="Mita-Line Onarimon Sta. Tokyo Tower" />',
                      '<img src="/eng/i/top_keyimage_3.jpg" width="579" height="211" alt="Asakusa-Line Asakusa Sta. Senso-ji" title="Asakusa-Line Asakusa Sta. Senso-ji" />',
                      '<img src="/eng/i/top_keyimage_4.jpg" width="579" height="211" alt="Shinjyuku-Line Shinjyuku Sta. Nishi-Shinjyuku" title="Shinjyuku-Line Shinjyuku Sta. Nishi-Shinjyuku" />');

var INTERVAL  = 6000;