body{
     width: 980px;
     margin: 0 auto;
     background: #000000;
}

#_table{
     width: 100%;
     height: 100%;
}
#back_pic{
     width: 1024px;
     height: 768px;
    background-image: url(../_image/background_image.jpg);
}
.sor{
    height: 33%;
}

a{
     text-decoration: none;
}

a.hover{
     text-decoration: none;
}