#principal{
	margin:0;
	width:780px;
	height:auto;
}
#topo{
	display:block;
	margin:0;
	width:780px;
	height:455px;
	text-align: center;
}
#centroIndex{
	clear:both;
	float:left;
	position:relative;
	margin:0px;
	width: 780px;
	background-position: left top;
	padding: 0px;
	height:auto;
}

#centroDir{
	position:relative;
	float:left;
	margin:0px;
	padding:0px;
	width:555px;
	height:auto;
	left:28px;
	top:10px;
}