#left_column {
	float: left;
	width: 520px; 
	margin: 0;
	padding: 0;
	}

#right_column {
	float: right;
	width: 360px;
	margin: 0;
	padding: 0;
	}

/* -------- listings table -------- */
table.listings {
width: 100%;
margin: 0 auto;
color: #000;
background: #fff;
}

table.listings tr.shaded {
background-color: #ccc;
}