#menu {
	width:880px; /* varia com numero de links */
	margin:0 auto;
}

#nav, #nav ul {
	list-style:none;
	font-size:12px;
	padding:0;
	margin:0;
	margin-top:11px;
}

#nav li a {
	font-family:Arial, Helvetica, sans-serif;
	line-height:41px;
	height:53px;
	width:176px;
	display:block;
	color:#FFF;
	text-decoration: none;
	padding:0;
	position:relative;
}

#nav li {
	float:left;
}

#ss1,#ss2,#ss3,#ss4,#ss5 {
	background-image:url(../_img/maskbts.png);
	background-repeat:no-repeat;
	width:175px;
	height:41px;
	position:absolute;
	*margin-top:-3px; /* hack IE */
}
#ss1 {
	background-position:2px 0px;
	width:176px;
}
#ss2{
	width:176px;
	background-position:1px 0px;
}
#ss3 {
	background-position:1px 0px;
	width:175px;
}
#ss4{
	background-position:0px 0px;
	width:175px;
}
#ss5{
	background-position:0px 0px;
	width:175px;
}