#menumain_top{
   margin:0;
   white-space:nowrap;
   overflow:hidden;
   width:100%;
   color:#fff;
   background-color:#dedede;
}

#menumain_top .menumain_top{
   float:left;
   width:99px;
   height:51px;
   color:#fff;
   border-left:1px solid #fff;
   border-top:1px solid #fff;
   line-height:30px;
   text-align:center;
   margin:-1px 1px 1px -1px ;
}


#menumain_top .menumain_top a:link {
   color: #2c2c2c; 
   display:block;
   text-decoration: none;
   font:bold 17px/50px 'Microsoft YaHei','SimSun',Arial,Sans-Serif;
}

#menumain_top .menumain_top a:visited {
   color: #2c2c2c; 
   display:block;
   text-decoration: none;
   font:bold 17px/50px 'Microsoft YaHei','SimSun',Arial,Sans-Serif;
}

#menumain_top .menumain_top a:hover {
   color: #fff; 
   text-decoration: none;
   background-color:#565656;
   font:bold 17px/50px 'Microsoft YaHei','SimSun',Arial,Sans-Serif;
}