.main_left_top {
    width: 37px;
    height: 411px;
    background: url("/images/start_page/left_top.jpg");
}
.main_center_top {
    width: 938px;
    height: 411px;
    background: url("/images/start_page/center_top.jpg");
}
.main_right_top {
    width: 25px;
    height: 411px;
    background: url("/images/start_page/right_top.jpg");
}
.main_left_middle {
    width: 37px;
    height: 80%;
    background: url("/images/start_page/left_middle_background.jpg") repeat-y;
}
.main_left_middle div {
    width: 37px;
    height: 100%;
    background: url("/images/start_page/left_middle_bottom_piece.jpg") left bottom no-repeat;
}
.main_left_middle div div {
    width: 37px;
    height: 100%;
    background: url("/images/start_page/left_middle_top_piece.jpg") top no-repeat;
}

.what_is_mm {
    position: absolute; 
    top: 230px; 
    left: 705px; 
    height: 40px; 
    width: 85px;
    cursor: pointer;
}