.home_left_top { background:url("../images/home_left_top.jpg") left top no-repeat; }
.home_left_bottom { background:url("../images/home_left_bottom.jpg") left top no-repeat; }
.home_right_top { background:url("../images/home_right_top.jpg") left top no-repeat; }
.home_right_bottom { background:url("../images/home_right_bottom.jpg") left top no-repeat; }