#menumain{
   margin:0px;
   padding-left:348px;
   white-space:nowrap;
   overflow:hidden;
   height:38px;
   background:url(top.png) 0px 0px repeat-x;
}

#menumain a.menumain:link,#menumain a.menumain:active,#menumain a.menumain:visited{
   display:block;
   float:left;
   color: #ffffff; 
   width:90px;
   height:38px;
   text-decoration: none;
   text-align:center;
   background:url(li.gif) left no-repeat;
   font:14px/38px 'Microsoft YaHei','SimSun',Arial,Sans-Serif;
   margin:0px;
}

#menumain a.menumain:hover {
   display:block;
   float:left;
   color: #ff6600; 
   width:90px;
   height:38px;
   text-decoration: none;
   margin:0px;
}