#menumain{
   margin:0px;
   padding:0px;
   white-space:nowrap;
   overflow:hidden;
   height:42px;
}

#menumain a.menumain:link,#menumain a.menumain:active,#menumain a.menumain:visited{
   display:block;
   float:left;
   color: #ffffff; 
   width:99px;
   height:42px;
   text-decoration: none;
   text-align:center;
   background:url(menu.jpg) no-repeat;
   font:14px/35px 'SimSun',Arial,Sans-Serif;
   margin:0px;
}

#menumain a.menumain:hover {
   display:block;
   float:left;
   color: #fff; 
   width:99px;
   height:42px;
   text-decoration: none;
   text-align:center;
   background:url(menunow.jpg) no-repeat;
   font:14px/35px 'SimSun',Arial,Sans-Serif;
   margin:0px;
}