#topo {
	position:relative;
	width:780px;
	height:70px;
	z-index:4;
	margin-right: auto;
	margin-left: auto;
	top: 10px;
}
#menu_main {
	position:relative;
	width:780px;
	height:55px;
	z-index:1;
	margin-left: auto;
	margin-right: auto;
	background-color: #FFFFFF;
	text-align: center;
}
#base_copyright {
	position:relative;
	width:780px;
	height:15px;
	z-index:3;
	top: 5px;
	margin-right: auto;
	margin-left: auto;
	text-align: center;
}