#menu {
font-family: Tahoma Sans, sans-serif; font-size:13px;
}
#menu ul {margin:0px; padding:0px;}
#menu li {float:left; list-style:none; margin-right:1px;}
#menu li a {
width:100px;
height:30px;
display:block;
text-align:center;
padding-top:5px;
color: #333333;
text-decoration:none;
}
#menu li a:hover {
width:100px;
height:30px;
background: url(../imagens/bt_menu.jpg) no-repeat;
color: #FFFFFF;
font-weight:bolder;
}