#menumain{
   margin:0px;
   white-space:nowrap;
   overflow:hidden;
   width:100%;
   background:url(../st-images/menu_top.png) 0px 0px no-repeat;
}

#menumain .menuleft{
   float:left;
   height:50px;
   width:15px;
}

#menumain .menuright{
   float:right;
   height:50px;
   margin:0px;
   width:155px;
   cursor:pointer;
}

#menumain .menumain{
   float:left;
   width:110px;
   height:50px;   
   text-align:center;
   margin:0px;
   padding:0px;
   background:url(../st-images/menu_li.gif) right no-repeat;
}

#menumain a:link,#menumain a:active,#menumain a:visited{

   color: #fff; 
   display:block;
   text-decoration: none;
   font:16px/50px 'Microsoft YaHei','SimSun',Arial,Sans-Serif;font-weight:bold;
}

#menumain a:hover {
   color: #ffff00; 
   text-decoration: underline;
   font:16px/50px 'Microsoft YaHei','SimSun',Arial,Sans-Serif;font-weight:bold;
}