.navbot{width: 1000px;height: 30px;margin: 0 auto;line-height: 30px;background: url("nav2.jpg") no-repeat center;}
.e_main{width:978px;margin: 0 auto;background-color: #f7fdfe;overflow: hidden;border-left: 1px solid #e8f7fb;border-right: 1px solid #e8f7fb;}
.main_bot{width: 100%;height: 15px;background: url("mainbot.jpg") no-repeat center;}
.e_con{width: 956px;margin: 0 auto;display:block;margin-top:20px;}

.list_left{width: 100%;}