ul.nav { 
	float:right;
	margin:0; 
	padding:0;
	}
	
ul.nav li {
	list-style:none;	
	display:inline;
	}
ul.nav li a {
	color:#333333;
	background-image:url(imagens/menu_01.jpg);
	background-repeat:no-repeat;
	padding-top:5px;
	float:left;
	border:0px;
	width:90px;
	height:28px;
	font:14px  Trebuchet MS, sans-serif;
	font-weight:bold;
	text-align:center;
	text-decoration:none;
	}
ul.nav a:hover{
	background-image:url(imagens/menu_02.jpg);
	background-repeat:no-repeat;
	color:#333333;
	}