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banner[1]='https://i926.photobucket.com/albums/ad107/filialarvalady2/Code%20Kakumei/bannieres/ban51_850x450_zps723d42d5.png';
banner[2]='https://i926.photobucket.com/albums/ad107/filialarvalady2/Code%20Kakumei/bannieres/ban52_850x450_zps00750fe0.png';
banner[3]='https://i926.photobucket.com/albums/ad107/filialarvalady2/Code%20Kakumei/bannieres/ban53_850x450_zpsf9223b4f.png';
banner[4]='https://i926.photobucket.com/albums/ad107/filialarvalady2/Code%20Kakumei/bannieres/ban54_850x450_zpsa4c660ad.png';
banner[5]='https://i926.photobucket.com/albums/ad107/filialarvalady2/Code%20Kakumei/bannieres/ban55_850x450_zps312bb06c.png';

document.getElementById('i_logo').src= banner[Math.floor(Math.random()*banner.length)];