html,body{ width:100%; margin:0;font-size:12px;text-align:center;background-color:#ffffff;}

ol,ul,li{ margin:0px;padding:0px;border:0px;list-style:none;}
div,form,img,dl,dt,dd,iframe{ margin:0px;padding:0px;border:0px;}

a:link{text-decoration:none; color:#303030;}
a:visited{text-decoration:none;color:#303030;}
a:hover{text-decoration:none;color:#fe9e3d;}

.daohang{width:900px;height:90px;  margin:0 auto;}
.logo{width:90px;height:90px;float:left;}
.bg{z-index:100;width:741px;height:72px;float:right;margin-top:18px;background-image:url("../images/daohang_bg.gif");}

.btn_shouye{width:153px;height:72px;float:left;}
.btn_zixun{width:129px;height:72px;float:left;}
.btn_shuju{width:126px;height:72px;float:left;}
.btn_liucheng{width:136px;height:72px;float:left;}
.btn_lianxi{width:197px;height:72px;float:right;}

.img1{width:153px;height:72px;visibility:visible;}
.img2{width:129px;height:72px;visibility:hidden;}
.img3{width:126px;height:72px;visibility:hidden;}
.img4{width:136px;height:72px;visibility:hidden;}
.img5{width:197px;height:72px;visibility:hidden;}

.daohang2_zixun{background-image:url("../images/daohang2_zixun.gif");width:295px;height:15px;position:absolute;text-align:left;padding-top:5px;left:300px;top:65px;visibility:hidden;}
.span1{margin-left:20px;}
.span2{margin-left:43px;}
.span3{margin-left:30px;}
.span4{margin-left:33px;}
.span5{margin-left:28px;}


.daohang2_shuju{background-image:url("../images/daohang2_shuju.gif");width:576px;height:15px;position:absolute;text-align:left;padding-top:5px;left:310px;top:65px;visibility:hidden;}