body.time-0000 #content {
    background: #e8d9d2 url(/a/img/homeSeasons/summer-0000.jpg) no-repeat;
}

body.time-1500 #content {
    background: #e8d9d2 url(/a/img/homeSeasons/summer-1500.jpg) no-repeat;
}

body.time-1900 #content {
    background: #e8d9d2 url(/a/img/homeSeasons/summer-1900.jpg) no-repeat;
}