/*¹ã¸æCSS*/
.ad1000_60 {
    width: 1000px;
    height: 60px;
    margin:0 auto;
}
.ad300_250 {
    width:300px;
    height:250px;
}


.ad640_100{
    width:640px;
    height:80px;
}

.ad300_100{
    width:300px;
    height:100px;
}

.ad300_220{
    width:300px;
    height:220px;
}