var bannerPlaces = document.getElementsByClassName("seikatsu_r_otomegame");
for (var i = 0; i < bannerPlaces.length; i++){
bannerPlaces[i].setAttribute("id", "seikatsu_r_otomegame"+(i + 1));
}
for (var i = 0; i < bannerPlaces.length; i++){
var lists=[
'
','
','
','
','
','
','
','
','
','
','
','
','
','
','
','
',
];
var randnm = Math.floor(Math.random() * lists.length);
var output = lists[randnm];
document.getElementById("seikatsu_r_otomegame"+(i + 1)).insertAdjacentHTML('afterbegin', output);
}