/*广告CSS*/.ad1000_60 {    width: 1000px;    height: 60px;    margin:0 auto;	overflow:hidden;}.ad1000_90 {    width: 1000px;    height: 90px;    margin:0 auto;	overflow:hidden;}.ad300_250 {    width:300px;    height:250px;	overflow:hidden;}.ad640_100{    width:640px;    height:80px;	overflow:hidden;}.ad300_100{    width:300px;    height:100px;	overflow:hidden;}.ad300_220{    width:300px;    height:220px;	overflow:hidden;}