Bude to nejspíš width: 760px; (v hlavičce, obsahu a patičce).

#header {
	background: url('images/page_header_bblogo.png') no-repeat bottom right; /* Remove to get rid of bb emblem. */
	margin: 0 auto 10px;
	width: 760px;
	height: 116px;
	position: relative;

#main {
	font-size: 1.2em;
	width: 760px;
	margin: 0 auto 25px;
	position: relative;

#footer {
	font-family: Georgia;
	font-style: italic;
	border-top: 1px solid #ccc;
	margin: auto;
	color: #666;
	font-size: 1.0em;
	padding-top: 10px;
	clear: both;
	text-align: right;
	width: 760px;