.home-but{background:url(../images/top-menu.png) 0 0 no-repeat;width:78px;height:41px;display:block;}
.home-but:hover{background:url(../images/top-menu.png) 0 -41px no-repeat;}
.home-but.active{background:url(../images/top-menu.png) 0 -41px no-repeat;}
.names-but{background:url(../images/top-menu.png) -78px 0 no-repeat;width:140px;height:41px;display:block;}
.names-but:hover{background:url(../images/top-menu.png) -78px -41px no-repeat;}
.names-but.active{background:url(../images/top-menu.png) -78px -41px no-repeat;}
.hositng-but{background:url(../images/top-menu.png) -218px 0 no-repeat;width:127px;height:41px;display:block;}
.hositng-but:hover{background:url(../images/top-menu.png) -218px -41px no-repeat;}
.hositng-but.active{background:url(../images/top-menu.png) -218px -41px no-repeat;}
.traffic-but{background:url(../images/top-menu.png) -345px 0 no-repeat;width:119px;height:41px;display:block;}
.traffic-but:hover{background:url(../images/top-menu.png) -345px -41px no-repeat;}
.traffic-but.active{background:url(../images/top-menu.png) -345px -41px no-repeat;}
.design-but{background:url(../images/top-menu.png) -463px 0 no-repeat;width:118px;height:41px;display:block;}
.design-but:hover{background:url(../images/top-menu.png) -463px -41px no-repeat;}
.design-but.active{background:url(../images/top-menu.png) -463px -41px no-repeat;}
.support-but{background:url(../images/top-menu.png) -581px 0 no-repeat;width:160px;height:41px;display:block;}
.support-but:hover{background:url(../images/top-menu.png) -581px -41px no-repeat;}
.support-but.active{background:url(../images/top-menu.png) -581px -41px no-repeat;}
#toTop{display:none;text-decoration:none;position:fixed;bottom:10px;right:10px;overflow:hidden;width:39px;height:48px;border:none;text-indent:-999px;background:url(../images/ui.totop.png) no-repeat left top;}
#toTopHover{background:url(../images/ui.totop.png) no-repeat left -48px;width:39px;height:48px;display:block;overflow:hidden;float:left;opacity:0;}
#toTop:active, #toTop:focus{outline:none;}