#ecn_links {
	text-align:center;
	margin-top:150px;
}
#main_links {
	margin-top:300px;
	text-align:center;
}
#main_links td {
	vertical-align:text-bottom;
	text-align:center;
	font-size:11px;
}
#main_links table {
	width:800px;
	margin-left:auto;
	margin-right:auto; 
}