.top_right_ad {
	text-align: center;
}
.right_column_ad {
	text-align: center;
}
.above_listing_middle_column_ad {
	text-align: center;
	margin-top: 15px;
}
.above_map_middle_column_ad {
	text-align: center;
	margin-top: 15px;
	margin-bottom: 15px;
}
.article_header_ad {
	text-align: center;
}
.article_footer_ad {
	text-align: center;
	margin-top: 15px;
}
.left_column_ad {
	margin-top:15px;
	margin-left:11px;
}