ciao a tutti, sto pian piano imparando ad usare i css,
ho questa pagina http://www.verdeacido.com/menu.htm , perchè con Explorer tutto OK mentre con mozilla non mi visualizza le img di sfondo?

il codice dei css è questo:
codice:
<style type="text/css">
<!--
.menuqui{
	float: left;
	padding: 8px 0px 4px;
	margin: 0px;
	width:87px;
	height: 30px;
	text-align:center;
	text-decoration:none;
	color:#000000;
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: center top;
	border-top: 0px none #000000;
	border-right: 0px solid #FFFFFF;
	border-bottom: 0px solid #E5E5E5;
	border-left: 0px;
	font-family: "Trebuchet MS", Verdana, Arial;
	font-size: 12px;
	background-image: url(images/roll01.jpg);
  }
.menu a{
	float: left;
	padding: 8px 0px 4px;
	margin: 0px;
	width:87px;
	height: 30px;
	text-align:center;
	text-decoration:none;
	color:#000000;
	background-image: url(images/roll00.jpg);
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: center top;
	border-top: 0px none #000000;
	border-right: 0px solid #FFFFFF;
	border-bottom: 0px solid #E5E5E5;
	border-left: 0px;
	font-family: "Trebuchet MS", Verdana, Arial;
	font-size: 12px;
  }
.menu a:hover{
	color:#FFFFFF;
	background-image: url(images/rollov.gif);
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: center top;
}
#barranav{
	position:relative;
	top:0px;
	left:0px;
	padding:0px;
	height: 30px;
}

-->
</style>
Grazie Mat