#Topbar {height:110px;background: url(../dingbu/np.png) repeat-x 0 0; }
.Topwrap { width:1200px;margin: 0 auto;position: relative;height: 100%;}
#Topnav{height: 100px;background: url(../dingbu/topnav.jpg) no-repeat 0 0;width: 672px;float: left;}
#Topnav li{float: left;}
#Topnav a{display: block;width: 222px;height: 100px;margin-left: 2px;text-indent: -999em;}
#Topnav a:hover{background-image: url(../dingbu/topnav.jpg);background-repeat: no-repeat;}
#Topnav a.n1:hover{background-position: -2px -100px;}
#Topnav a.n2:hover{background-position: -226px -100px;}
#Topnav a.n3:hover{background-position: -450px -100px;}
#Topbar .entry{background: url(../dingbu/entry.jpg) no-repeat 0 0;display: block;width: 236px;height: 100px;overflow: hidden;text-indent: -999em;float: left;}
#Topbar .forum{background: url(../dingbu/forum.jpg) no-repeat 0 0;display: block;width: 236px;height: 100px;margin-left: 7px;overflow: hidden;text-indent: -999em;float: left;}
#Topbar .entry:hover{background: url(../dingbu/entry_1.jpg) no-repeat 0 0;}
#Topbar .forum:hover{background: url(../dingbu/forum_1.jpg) no-repeat 0 0;}